Volume 5 Chapter 13 Day Two: Lock-Breaking ② (Kaharu Miku)*
Edited by: Kanaa-senpai
Led by Risa, we headed to my room. Once everyone was inside, I closed the door. This was partly to show them that running away wasn’t an option.
I sat on the bed. Risa gave the order.
”Let’s begin. Strip.”
”Yes, ma’am,” Megumi said.
”Understood…” Kaharu-san muttered.
Having been through this yesterday, Megumi took off her yukata quickly, showing a bit of shyness, and was soon in her underwear. Seeing this, Kaharu-san hesitated but slowly untied her own sash.
Her yukata fell to the floor, revealing a childlike body.
Of all the girls I’d been with, she was the most immature, with a chubby, soft frame. She was about 150 cm tall.
Her whole body looked soft and squishy, with hardly any curves. Like Megumi, she’d been hiding it well with winter clothes.
She’d lost a lot of fat, especially from her chest and butt. Her cup size was an A… maybe a B if she squeezed? The pretty embroidery on her underwear felt strangely out of place.
”Everything off. Underwear too,” Risa ordered.
I’d wanted to enjoy the view a bit longer, but Risa’s command made them strip completely naked. Kaharu-san’s body was childlike, but she had a full bush of hair down there. It reminded me that she was actually my age, even if she didn’t look it. Hiding her privates while taking off her panties was strangely sexy, and her soft belly had its own charm.
”Like, completely pathetic! You’re about to have sex, remember? You should be stripping in a way that, like, totally turns him on!” Risa complained, scoffing at them.
Risa took off her own yukata with a flirtatious glance, as if showing them how it’s done.
It was really exciting. But that’s because it was Risa doing it—Risa with her perfect body, trying her best for me, bringing back memories of how good it felt before.
If a virgin or a second-timer tried to act sexy like Risa, it wouldn’t work. It might even kill the mood, like smelling a bad vibe. Maybe if they were a virgin trying to be slutty, there’d be a chance…? No, still no. For these two, the shy way they undressed was exactly right.
Risa had misread my feelings, but when she hugged me, I couldn’t help getting excited. She felt my dick get hard and grinned proudly. Letting her keep her misunderstanding was fine.
”Alright, get Minoru ready so he can slide right in. Never neglect your duty to pleasure the Strong-Male (a powerful man). That’s, like, totally basic etiquette for members of the Strong-Females (Shoji’s group), you know?” Risa lectured.
I was surprised to hear those words from Risa. Six months ago, these two would have known more about that stuff than Risa. I thought about pointing out that it was a bit rich for her to brag to girls raised as sorcerers, but I let it slide, considering she was way ahead in practical experience.
”Um…!” Kaharu-san spoke up, her voice slightly strained. She was facing me, clearly wanting to say something.
”I am so sorry for my pathetic, miserable body…! I will do everything in my power to make sure you enjoy yourself!” Kaharu-san cried out.
She stood straight, with her fingers perfectly aligned, then bowed ninety degrees. It was a pose that suited a sporty junior.
”It’s fine—” I started to say.
”If you, like, actually mean that, show it with your actions! Come on, get up on the bed and masturbate. Stop wasting ti—?!” Risa commanded, cutting me off.
I grabbed Risa’s breast hard, digging my nails in a little. Surprised, she turned to me and realized from my face that I was annoyed.
”I-I’m sorry,” Risa whimpered.
”Is interrupting a Majin a part of basic etiquette for the Strong-Females now?” I asked coldly.
My tone must have made her feel like she’d stepped on a tiger’s tail.
”N-No, it’s not! I literally didn’t mean to, I swear…!” Risa stammered.
Suddenly, she forgot about the other two and started fawning over me, trying to get back in my good graces. Her usual tough attitude vanished, and she looked like a lost kitten.
”I get it. As a senior member of the Strong-Females, you were just trying to instruct them so they wouldn’t make a mistake, right? I know you always put me first, Risa,” I reassured her.
I softened my grip, then teased her in the gentle way she liked. I leaned in, made her face me, and gave her a quick kiss.
”Ah…♡ Ah…” Risa gasped.
”It’s a matter of degree. Just because you’re supervising their instruction doesn’t mean you need to be so wound up. Just act like you always do. Make me feel good,” I told her.
”Y-Yeah… Okay, I totally understand…♡” Risa whispered.
Looking relieved, Risa pulled away and sat on the bed in a girly pose.
”Minoru, can I give them just a tiny bit of direction?” Risa asked.
”Go ahead,” I replied.
”Okay… To make it easier for Minoru to slide inside even though it’s your first time, I’m gonna use my pussy to stroke him until he’s, like, rock-hard and dripping wet. While I do that, the two of you need to get Kaharu-san ready. Sanuki-san, if Kaharu-san is having trouble getting wet on her own, make sure you, like, totally teach her what to do,” Risa directed.
””Yes, ma’am!”” they answered in unison.
They obeyed without question.
The two naked girls slowly hugged each other. There was a height difference between Megumi and Kaharu-san. Kaharu-san’s face tilted up, and Megumi’s face came closer. Kaharu-san looked relieved… wait, hold on!
”Stop. Both of you, freeze right there,” I commanded.
They stopped instantly. Risa, who was about to spread her legs on the bed, straightened up in a panic, like she’d messed up again.
”Are you two… by any chance, in that kind of relationship? Yuri?” I asked.
”Yes,” Megumi answered immediately.
”……Yes,” Kaharu-san confessed, opening her mouth only after feeling the heavy pressure of Megumi’s pleading gaze, practically begging her to confess.
”How far have you gone?” I questioned them.
I knew Megumi’s hymen was still intact…
””We are deeply sorry!”” they cried out together.
They were both kneeling naked on the floor.
”Miku has used a dildo before. I… I was the one who took Miku’s first time,” Megumi admitted.1
”Megumi didn’t do anything wrong! I was the one who begged her to do it, and I forced her to keep it a secret! Please…!” Kaharu-san pleaded.
In this world, most Strong-Males don’t pick Strong-Females who aren’t virgins. It’s not like they’re obsessed with virginity, but when given a choice, they wouldn’t pick a girl touched by another man. That’s why F-class Strong-Females often form strong bonds and end up with each other.
”Since when?” I asked.
”That’s…” Megumi hesitated.
As they knelt there naked, they told me their story. It was what I’d expected. In their despair of never being believed, their shared situation had turned into love.
”What the hell?! Like, Kuga-san didn’t mention a single word about—” Risa shouted, fuming.
”Risa,” I interjected.
Risa, who had been about to interrogate them, fell silent at my word.
”Did you tell Manaka about this?” I asked.
”Yes,” Megumi replied.
”And what did Manaka say? What did she tell you to say to me regarding this matter?” I inquired.
”That is…” Megumi murmured.
”No, forget it. You don’t have to tell me. Ultimately, what needs to be done remains the same,” I stated.
I figured Manaka would have said something like, “Minoru won’t care, it’s fine.” As the two of them looked relieved, and I was about to get back to the “instruction,” a voice called out from behind me.
”Minoru… like, isn’t that a mistake?” Risa spoke up.
Compared to her usual tone, Risa’s voice was very hesitant, but she clearly disagreed with my decision. I turned around. She flinched under my gaze but said the same thing again.
”I think you really need to find out exactly what Kuga-san instructed them to do,” Risa urged.
”—Why?” I asked.
”Minoru, you trust Kuga-san way too much. Especially regarding this situation… like, to put it bluntly, she’s totally playing you. As a member of the Strong-Females belonging to your group, I’m, like, genuinely worried about you,” Risa explained.
”……” I remained silent.
I trusted Manaka. That trust was solid, based on nine years of growing up together. But Risa’s words hit home. Hadn’t Manaka herself told me the other day that I was too weak in investigating the cause of our current situation? That was exactly what was happening now.
”I’m sorry… But like, I really felt like I had to say this…” Risa murmured.
Risa looked at me, checking if I was annoyed. It must have taken a lot of courage for her to say that. I could see her shaking a little.
”You’re right, Risa. Megumi, change of plans. What exactly did Manaka say about this?” I commanded.
”When she heard about our relationship, she simply said, ‘I see.’ Then she added, ‘Tatemiya-kun is kind, so it will be perfectly fine,’” Megumi explained.
”Kind, huh…? I see…” I muttered.
’Kind’ could be taken at face value, or it might have another meaning. I hoped it wasn’t used as a way to say I had nothing else going for me.
”There is one more thing…” Megumi added.
”Hmm?” I asked.
”She left us with a message, telling us to only reveal it to you once we have both achieved a Double Breakthrough,” Megumi revealed.
”Oh? Tell me more.” I wondered.
”So please… forgive us until then,” Kaharu-san pleaded.
They knelt naked on the floor again. It seemed to be becoming their default pose. At this rate, we’d be dragging this out forever. I decided to just go ahead and figure it out afterwards.
”Fine. Let’s do the Double Breakthrough first. Get ready,” I instructed.
”Yes, of course!” Megumi nodded.
Whenever I tried to act, something got in the way. I wasn’t about to stop now. I stood up, glanced at Megumi and Kaharu-san hugging on the bed, and climbed on top of Risa, who was lying on her back.
”Ah…♡ Hey, like, even after hearing all of that, are you sure you want to start with me?” Risa asked, shifting her gaze.
Risa kept glancing at the other two. She seemed to be resisting the idea of abandoning her role as supervisor, even though it was important.
”It’s fine. Come on, make me feel good,” I told her.
I had insurance in place just in case. If the two of them tried anything suspicious, the Aberrations (Hinoki) would handle it.
”Oh, honestly…♡” Risa sighed.
Risa gave in to my forceful advance.
I licked Risa’s breasts while rubbing my half-hard dick against her thigh. Delicious. Risa used both hands to gently stroke my dick—the tip, the shaft, the underside. As expected, experience made a difference.
When it was fully hard, Risa spread her legs. I moved my body up and rubbed our genitals together. As I pushed and slid, Risa moved her hips to meet mine, and my dick slipped along her slit.
”Ahaha…♡♡” Risa giggled.
We moved our hips together for a while, enjoying a kind of fake sex without penetration. It felt good, but it was more about expressing our feelings through physical contact. After a dozen or so hip movements, I felt my tip settle perfectly at Risa’s entrance.
As if by mutual agreement, we stopped moving.
We looked into each other’s eyes, silently syncing our timing.
I slowly pushed my hips forward, and my dick sank into her slippery, wet tunnel. I felt my manhood push open her tightly closed womanhood. Slowly, my tip reached the deepest part of her.
”Mnh…♡♡” Risa moaned.
I continued moving my hips slowly, kissing Risa as she’d demanded with her eyes closed. I rubbed my tip against the entrance to her stomach, her favorite spot, and it was cute to see her thighs twitch. It felt amazing for me too.
”Nng… ♡ Mmh… ♡ Nnn… ♡♡”
Since I didn’t pull away, Risa was left moaning through her nose. As I tangled our tongues and pushed my saliva into her mouth, I looked over to see Megumi licking Kaharu-san, who was lying on her back. Kaharu-san’s body twitched and jerked occasionally.
She seemed ready, so I decided to pull away from Risa for a moment. I stopped moving my hips and broke our kiss.
”Pha… ♡, haa… ♡♡” Risa gasped, struggling to catch her breath.
”Risa, I’m going to thrust three times. You’ll finish on the third,” I said firmly.
”E-Eh…?” Risa stammered, her eyes wide with confusion.
I didn’t give her time to think.
”O-one…”
”Hau… ♡” she whimpered, her body tensing in anticipation.
”T-two…”
”C-c’mon, wait, that ain’t right… ♡” Risa pleaded, but her body betrayed her.
”Three!”
”Ah… ♡ I’m, I’m gonna finish! First time… ♡♡” Risa cried out, her back arching as she climaxed. My dick was squeezed tight by her orgasm.2
”Ah… ♡♡ …Oh… ♡♡ …Ungh… ♡♡”
Risa had successfully performed an [Open-Lock]. I scanned her soul… hm? Something felt off. It was a bit more muddled than usual. Was she jealous? I used a bit of Mana to clear it.
”Ah… ♡♡♡”
After shaking violently, Risa relaxed. I pulled my fully hard dick out of her. Just as I was about to pull away, Risa sat up and playfully bit my lower lip. Finding her jealousy cute, I shifted, pushed Megumi aside, and pressed my tip against Kaharu-san’s small opening.
”Ah…”
I felt her tense up.
”Ghh… !!”
I forced my way in. It was tight. The size difference between her body and my dick was huge. Still, no way I was going to lose here. I pushed my dick, still hard from being inside Risa, into the small hole that Megumi had made nice and wet.
With a slip, I felt the tip hit something. I couldn’t push all the way in, but going further seemed impossible. Connected like this, Risa and Megumi watched from either side, holding their breath.
”I’m starting,” I announced.
I began thrusting, starting small and gradually getting bigger.
”Gh… …Uu… ♡” Kaharu-san moaned, her voice trembling.
She was struggling, but it wasn’t impossible for her. I suspected she’d experienced pleasure inside using a dildo before. The proof was that her small opening was still secreting juices.
”I’m going to release,” I said, watching her closely.
”Y-yes, sir!” she replied, her voice nervous and respectful.
I pulled back, thrust in as deep as I could, and came. I poured my seed into her beautiful, untouched womb.
”Wafuu… ♡♡” she sighed, her eyes glazing over.
”Fuu… … …” I exhaled, feeling the tension leave me.
”My stomach is… it’s feelin’ all hot inside, it is… ♡” Kaharu-san murmured, her coastal accent softening the words.
She stroked the spot where my tip had been. It wasn’t the temperature of my seed; it was the heat from my Mana flooding her. The [One-limit] was complete. Now the real work began.
Kaharu-san… from now on, I’d call her Miku. I wrapped my arms around her back and, still inside her, lifted her up.
”Kuuun…”
Miku let out a sound like a puppy and clung to me as I sat cross-legged. The weight of her body forced my entire length deeper inside her. Maybe because my tip was buried so deep, she looked a little pained.
”Can you do a [Double Breakthrough]?” I asked, looking her in the eyes.
”…I don’t reckon I can,” she whispered, her rural accent showing.
”I see. Just relax your body,” I said soothingly.
”Y-yes… !” she agreed, but her body stayed stiff.
I knew she was trying, but she was still too tense.
”Megumi, loosen her up,” I ordered.
”Yes, of course,” Megumi replied, her tone cool and efficient.
”Miku, lick my chest and arms. Clean them with your tongue,” I instructed.
”U-understood,” she replied softly.
I held Miku’s bottom with both hands and began moving her in small circles. In this face-to-face position, I first had to get her used to being filled. At the same time, I started crafting Miku’s duplicate key—the first step for her to perform a [Double Breakthrough] with [Breach-Lock].
”Risa,” I called out.
”Yes, what is it?” she asked, her voice light.
”Lick my feet, please.”
”Okay… ♡” Risa happily brought her face to my feet. She was really coming into her own as a submissive.
I enjoyed my second round, keeping my dick hard inside Miku, while my mind stayed cool, crafting the key. Luckily, the feeling of a tongue on my body, combined with the stimulation of the tight vagina, meant there was no risk of going soft. I carefully observed the lock and forged the key.
Finished. Miku’s duplicate key.
I checked the clock—less than ten minutes had passed. That was fast. I called out to Miku, who was dragging her tongue across my nipple.
”Miku.”
”Y…es… ♡”
”We’re doing the [Double Breakthrough].”
”Yes, as you wish, my love.”
Feeling Miku’s body cling to me, I turned the key.
”Ah… ♡ Ah… ♡♡ Uuuaaahhh… ♡♡♡”
Miku began to shake violently, clinging to me with all her might. I observed her soul. At that moment, I released my seed, infused with Mana. Giving in to the pleasure, I came for the second time.
”Guuuh… fuuuu… ♡♡♡”
As I suspected, when opened with a duplicate key, the lock stayed open unless I closed it myself. Miku’s body kept shivering at regular intervals. When the time was right, I closed the lock.
”Haa… …Haa… …Haa…”
Miku went limp, collapsing against me.
”Good work,” I praised her.
I lifted her chin, but her eyes weren’t focusing. That was to be expected. I gave her a light kiss and stroked her head.
”Wafuu… ♡”
Miku made another puppy-like sound and, half-unconscious, curled into my arms. I was glad the [Double Breakthrough] was a success.
—
Summary:
Stepping into the room under absolute containment, Minoru establishes dominance by closing off escape paths before stripping Megumi and Miku down. A sudden interruption uncovers a hidden yuri bond between the two girls, complete with a shared history that complicates the virgin-preference dynamic of the world’s Strong-Males. Prompted by Risa’s unexpected skepticism, Minoru uncovers that Manaka explicitly predicted his behavior, leaving behind a conditional message locked behind an unachieved Double Breakthrough.
The protagonist forces Risa and her two subordinates, Megumi and Kaharu (Miku), into his room for an intense session of physical intimacy linked to his world-specific power mechanics. Through controlled stimuli and his “Breach-Lock” ability, he guides them through “Open-Lock” and “Double Breakthrough” sequences to cement his dominance and connection. The session concludes with the group physically and emotionally spent, confirming the successful integration of the girls into his sphere of influence.
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Trivia:
- Miku Kaharu stands at only around 150 centimeters tall and deliberately concealed her plump, undeveloped body shape beneath heavy winter clothing.
- Low-tier Strong-Females in this setting form deep, exclusive romantic relationships with one another due to structural rejection by high-status Strong-Males who strictly prefer virgins.
- Manaka Kuga possesses a profound psychological read on Tatemiya Minoru, tracking his reactions across a span of nine years of shared academic life.
- Minoru implements an invisible security net inside his private quarters by deploying Aberrations like Hinoki to stand guard against unforeseen attacks during sensitive instructions.
- The protagonist uses “Mana” to manipulate the emotional state of his partners during intimacy.
- Kaharu’s transition to being called “Miku” marks a significant shift in the power dynamic and intimacy level.
- Risa’s jealousy is an intentional, monitored factor within the protagonist’s control over his harem.
- The “Breach-Lock” ability requires the creation of “duplicate keys,” which the protagonist crafts through intense observation during physical acts.
- The world’s social hierarchy, which strongly disfavors non-virginal women for the “Strong-Male” elite, drives the characters’ intense need for group solidarity.
—
Translation Notes:
Notes:
• Risa – A tall, well-endowed Naruse merchant student, sorcerer, and graceful skier raised as Plain-folk. Aikawa’s sister and Anri’s protective elder sister, she is a disciplined Onibara practitioner wielding a grenade rifle. She is Minoru and Yurina’s authoritative guide, teasing him about his secrets, cooking with Chifumi and Manaka, and remaining warily distrustful of Komoda and newcomers.
• R – A first-year student at District 13 High School who has successfully built a squad and added multiple girls, including M and A, into his group.
• T – A first-year student at District 13 High School who has recruited K and N from East Middle into his group.
• S – A first-year student at District 13 High School who has taken B from North Middle into his squad.
• Megumi – Satsuki is a young female sorcerer and the newest member of the Manaka group who underwent Break-Lock and Breach-Lock. Formerly broader, she worked to lose significant weight. Framed for tampering with a dungeon generator, she bears a grudge over her selection. She serves Minoru with shy devotion, sharing a secret intimacy with him and becoming easily embarrassed when teased.
• M – A first-year student at District 13 High School and the childhood friend of Anonymous Student 0006, described as an atavistic strong-female who looks plain but possesses significant power.
• Kaharu – A former classmate who undergoes instruction. She uses the Wind and Water attributes during the Erosion Game and participates in group strategies. An observer or participant who follows the group during the descent.
• K – A student from East Middle who followed N to National High School out of care, successfully remaining pure through N’s protection until a misunderstanding involving Anonymous Student 0008 led to her capitulation.
• A – A student from South Middle School described as an idol who has been recruited into R’s high school squad.
• B – A student originally from North Middle School who was added to S’s group.
• N – A student from East Middle with an eccentric personality who entered National High School due to complex family circumstances and used herself as leverage to negotiate a protective agreement for K.
• Minoru – A lean, black-haired student sorcerer, Majin, and hidden Demon Lord with adult memories rules the 5th District. He controls Aberrations via space magic, stealth, and Second-Push to observe souls. Methodical and dominant, this analytical leader treats social dynamics as strategic networking while controlling his harem of witches (Mai, Risa, Mitsuki) through intimate instruction at a resort.
• Shoji – A conspicuous, top-ranked male transfer student from the 5th District who wears a distinctive white uniform. Leading an independent exploration group, he is highly mobile on snow and connected to the local dungeon administration. Encountered by Minoru at a resort airport, he associates with Kotoha’s group, maintaining a dry, direct demeanor often baffled by others’ intense focus.
• Sanuki – A former classmate who undergoes instruction. She uses the Dark attribute during the Erosion Game and maintains a formal, compliant attitude toward the leadership. A woman scheduled to visit Minoru’s room to resolve friction and facilitate group mingling.
• Yuri – A cheerful and energetic first-year student at Higashi High who is a classmate of Shibuya and an acquaintance of Kibe Yurina from their middle school days. A girl known for being aggressive toward Hayato and displaying overt favoritism.
• Miku – A group member who initially joined as a newcomer seeking Minoru’s assistance to prove her innocence regarding a school incident, and later helps Sawa with the snow construction.
• Kuga – The family name, shared by Marin and Manaka, marks their kinship and appears on their garments, symbolizing their bond; it is also described as the farthest point from the narrator’s home, underscoring their distant connection.
• Manaka – An elegant, aristocratic Shisei High beauty and Kuga family sorcerer, this composed, authoritative leader of the Manaka group wields spatial and sound magic. Formerly with Mitsuki, she now advises childhood friend Minoru, managing recruits, dynamics, and protective oaths. Broad-minded and strategic, she facilitates intermediate training, orchestrates instruction, and authorizes Break-Lock.
• Tatemiya – The prestigious Tatemiya family and its Head house members play a central role in the group’s social dynamics during their search for powers. Their name defines the household where the protagonist Minoru, Kotoha, and his witches return to live, bond, and interact.
• Hinoki – An Oni-fied centipede Aberration in Minoru’s possession, this conversational they/them entity bridges the protagonist to a dormant mountain power they feel a nostalgic connection to. Speaking from his shadow in a regional dialect, this 30cm, sharp-eyed, metallic-shelled advisor and mount transforms into massive reptilian forms to draw aggro using dungeon sorcery, venom, and chains.
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Edited by Kanaa-senpai.
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