Chapter 50 Rank-Ups and Primal Lust
Edited by: Kanaa-senpai
”Right. I’ve finally got the lay of the land,” I muttered to myself.
I was staring at a palm-sized notebook while shoveling lunch into my mouth inside a small stone room. The map I had sketched was full of holes, but it covered everything I had explored so far. Looking at it now, I could finally estimate the true scale of the level.
This 6th floor was narrower than the sprawling caverns of floors one through four. It made sense; the floor was a complex of rooms and corridors, likely requiring more magical resources to render than a simple cave system. The developers had likely sacrificed total area to account for the architectural density.
Even so, exploring this place was taking forever. I was three days in and barely past the halfway mark. At this rate, finding the Guardian Room ² would take at least six days.
”Well, at least Rock turning out to be more than a meat shield was a pleasant surprise,” I said.
I had originally written the creature off as a distraction, but after his evolution and gear upgrade, the monster had become a genuine asset. Rock functioned as a perfect tank, drawing the Goblins’ aggro while I flanked them for the kill. If a new wave appeared, I would thin them out with a fireball. We had a rhythm now: Rock would pin the first group, I would sweep the perimeter, and then we would converge to crush the survivors.
Our coordination had slashed combat time and saved mana. Even with a steady intake of Mana Capacity Recovery Potions, I used to be tapped out by noon. Now, I still had plenty of gas in the tank. It was all thanks to Rock-sama.
”Still, dungeon monsters are freaks of nature,” I thought.
I tilted my head, watching Rock stand guard at the entrance. The creature drank water, but it didn’t need to eat. It felt pain, it bled, and it panted if it ran too hard – it looked like a living thing, but it wasn’t. Remia had called them ‘pseudo-lifeforms,’ and the craftsmanship was impressive.
Though, I still didn’t get why the system felt the need to enlarge the creature’s genitals. Perhaps there was a demographic of fur-loving succubae I hadn’t met yet. I finished my meal, let my stomach settle, and got back to the grind.
* * *
”Welcome home, Master!” Sayaka cried.
After finishing the day’s run and a quick briefing with Yuki at the 1st-floor teleport, I opened the door to my room. Sayaka lunged at me, wrapping herself around me in her usual greeting.
”I’m home. Did you eat that matcha cake I left?” I asked.
”Yes! It was very delicious. Thank you so much, Master,” Sayaka replied.
”Glad you liked it,” I said.
I stroked her hair as she nuzzled into my neck, then steered her into the room with a hand on her shoulder. The usual chorus of baleful screams and envious wailing echoed from the fountain outside, but I tuned it out. Their jealousy was a constant; I knew the Wall-Butt ³ would be doing brisk business again tonight.
In the staging area, I started stripping off my gear and handed it to Sayaka. Seeing her back as she leaned over to tidy up my equipment sent a sudden jolt of heat through me. I didn’t wait. I yanked her shorts down, flooded her Crotch Crest ⁴ with Mana Capacity to force her into a state of peak arousal, and took her right there from behind.
She climaxed instantly – a total, forced collapse. I carried her to the shower while she was still spasming, her backside arching as she leaked juices and hot seed. After she recovered from the afterglow, I had her scrub me down before sitting on the edge of the tub. I made her take me in her mouth, finishing deep in her throat.
After dinner, we followed our usual routine of games and dramas before moving to the bed. I decided to film her with my phone tonight.
”Look, Sayaka. I’m capturing the connection. You look beautiful like this,” I whispered.
The sight of her embarrassment revved me up enough to go three rounds back-to-back. I made sure to get a clear shot of her face afterward, messy and covered in my fluids. I was already looking forward to watching it with her later.
Sayaka was a twitching mess by the time I was done. I wondered briefly if I should pace myself, but then I headed to the living room to settle the day’s accounts and start my Wall-Butt time.
Mia was up first. I set up a book-stand and a backscratcher so she could finish the manga she had started last time. With ten minutes left, she put the book down, gave me a satisfied look through the display, and teased my crotch with her tail. I kneaded her small chest from behind while burying myself deep in her, filling her to the brim. She wagged her tail and vanished.
Next was the ever-reliable Freya. She milked three more loads out of me, just like always.
I realized I still had energy for one more. I summoned again, and Lilith appeared. For some reason, her nipples were already flushed bright red and her folds were soaking wet. I didn’t ask questions. Instead, I grabbed a permanent marker. I wrote ‘MEAT TOILET,’ ‘HARDCORE MASOCHIST,’ ‘YAKUMO’S PRIVATE HOLE,’ ‘SLUT,’ and ‘ANAL FREAK’ across her backside and thighs, then held her up to the Magic Crystal display so she could see herself.
Lilith went wild, her fluids dripping onto the floor in a steady stream. As I pounded into her, I read the insults I had written on her skin aloud. Her walls clamped down on me like a vice every time I called her a slut. Succubae climaxes were on another level. I spent a long time breaking her, eventually giving her two deep internal loads before the timer hit zero.
Satisfied that I had broken Lilith using nothing but a marker and my own stamina, I did a quick sweep of the floor and headed to sleep.
* * *
Day 18 of the Tester Life – Noon – 6th Floor – Sanada Yakumo
”Yeah, my capacity has definitely spiked,” I noted.
I had burned through about half my Mana Capacity before I finally realized just how much my reserves had grown. The day had started with the usual wake-up call from Sayaka, but the urge to go an extra round was overpowering. I suppressed it for the sake of the mission, had breakfast, and checked my stats.
My Mana Capacity rank had jumped to D+.
I had shouted “Yes!” out loud, scaring Sayaka while she was cleaning. When I showed her the screen, she cheered with me. That morning arousal wasn’t just a fluke; it was the literal side effect of the rank-up.
After gearing up, I gave Sayaka a kiss – nearly getting sidetracked by another erection – and headed to the 6th floor. I summoned Rock and got back to work. I felt lighter. My strength, speed, and reaction time were all up. By noon, I could feel my total volume clearly.
”Physical Reinforcement ⁵ 34… no, 35 uses. That’s a massive jump,” I calculated.
Going from F to F+ had given me two extra uses. F+ to E gave me five. E to E+ gave me another five. E+ to D gave me ten. But D to D+ was a leap of ten in a single sub-rank. The higher one went, the harder it was to level, but the payoffs were exponential.
Now I didn’t have to be stingy with my spells. I had cleared 70% of the 6th floor already. I might actually find the Guardian today.
”But first, food,” I muttered.
My metabolism seemed to have cranked up with my rank; I was starving. Being strong was great, but the fuel consumption was a problem. I decided I would have to bring three lunches tomorrow.
”Alright, Rock. I’m eating in this room. Keep your eyes peeled,” I ordered.
”Woof!” Rock barked.
I inhaled my lunch, followed it up with a calorie bar, and pushed into the afternoon. Four hours later, after dropping six Goblins, Rock suddenly dropped into a crouch. An obsidian light began to pulse from his skin.
”Your turn, Rock?” I asked.
The evolution felt fast. I wondered if the experience points from my own kills were flowing into the creature. Remia had mentioned that I acted as a conduit, refining the soul fragments of monsters into energy the familiar can absorb. If Rock was feasting on my leftovers, the growth speed made sense.
An E-rank Rock evolving to E+ rank. He was now higher rank than a Goblin.
The black light faded, and Rock stood up.
”Damn, you’re a tank now,” I said.
Rock was about 160cm tall now, but his frame had doubled in width. He was pure muscle. He was the same height as a Kobold King, but much bulkier. The creature had clearly sacrificed speed for raw power and endurance.
”You look like a beast, Rock,” I said, admiring the new form.
”Waon!”
”Hah! Your voice even deepened. Good. Next time we see Goblins, just bark at the little shits. If they freeze up, skewer them,” I said.
”Woof!”
”Good boy. Let’s go. Lead the way,” I commanded.
Rock let out a booming bark and started marching forward with the confidence of a commander. I followed behind him, feeling better than ever about my chances.
* * *
”I’m home,” I said.
”Welcome back, Master!” Sayaka cried.
I hadn’t found the Guardian Room, and I was feeling frustrated as I walked through the door. But the second Sayaka lunged into my arms, the dungeon was the last thing on my mind. The feel of her body against my hands had me on the verge of exploding. In the dungeon, the tension kept me in check. But the moment I touched her, the dam broke.
”Kyah!” Sayaka gasped.
I swept her off her feet, kicked the door shut, and pinned her against it. I stripped her pants, hit the Crotch Crest with a burst of Mana Capacity, and buried myself in her from behind.
”Ah, ah, ah… so suddenly… feels good…” Sayaka’s cries echoed in the hallway as I hammered into her, dumping everything I had been holding back into her.
It wasn’t enough. I carried her to the sofa and finished a second time in a heavy breeding press. Then I had her get on top and ride me until I let out a third.
I managed to cool off enough to eat dinner, but then I dragged her straight to the bedroom. By the time I had finished three more rounds, Sayaka was completely spent. She was out cold.
I was still humming with energy. I realized I was becoming something other than human. I headed to the Wall-Butt.
I told Freya I needed to empty my tank fast. She just wagged her tail and leaked fluids. I gave her four rounds. Then I summoned Aria and gave her three more without even pulling out. I had done thirteen rounds today. My body was still ready for more. I summoned one last time, and Lanora appeared. After one round with her, the fire in my gut finally started to fade.
She wasn’t about to let me leave after one, though. We went two more before the clock stopped.
”Fourteen rounds to settle down. Plus the one this morning. That’s fifteen,” I calculated.
It looked like my Rank D+ libido required fifteen rounds a day to stay sane. My stamina was scaling with my mana. The problem was Sayaka. Five rounds was her limit. If I pushed her harder, she would break. Since Sayaka was a Rank G human, she just didn’t have the stats to keep up with a Rank D+ assault.
”I’m going to have to lean on the Wall-Butt even harder,” I thought.
Succubae were built for this. I checked my DP: 38,000. I appraised Rock’s crystal: Kobold General. Rank E+.
”Time to get you some gear that matches the title,” I said.
I spent 35,000 DP on a set of heavy iron plate and a massive iron tower shield. It wiped out my earnings for the day, but it was a small price to pay for a world-class tank.
I hauled the gear to the service room, did a quick tidy of the living room, and finally crawled into bed, pulling Sayaka close.
—
Summary:
Yakumo advances to Mana Capacity Rank D+, resulting in a massive surge in both his magical reserves and sexual stamina. His familiar, Rock, evolves into a Kobold General after intense grinding on the 6th floor. Back at the base, Yakumo finds that his increased libido requires fifteen rounds of release, far exceeding Sayaka’s physical limits.
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Character Insight:
Yakumo is becoming increasingly detached from his human limitations, viewing his growth through game mechanics while acknowledging his predatory nature. Sayaka remains devoted despite the physical toll Yakumo’s new rank takes on her.
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Behind the Scenes:
The ‘Wall-Butt’ system continues to be a central mechanic for mana and libido management, emphasizing the dungeon’s design for high-frequency sexual interaction.
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TL Notes:
Notes:
• Rock – A male Kobold summoned from a Magic Sealing Crystal. He has grey fur, round eyes, and a face resembling a Shiba Inu. He wears a leather jacket and a pilot’s cap
• Remia – A cheerful and mischievous succubus with long purple hair and a massive breasts reaching ‘explosive’ levels. Acts as a guide and explains slave systems. Knows Sanada by reputation. Rank B Mana Capacity. Intelligent and persuasive.
• Sayaka – The academy’s premier beauty and a member of the swimming club. Currently classified as a Rank 1 Slave. She is seventeen years old and a virgin. E-cup. She has blue, short, boyish hair. Her best friend is Sanae.
• Yuki – A third-year high school student and leader of the Battle Sports Club. He is a national champion in medieval-style combat using swords and spears. He has a severe sister complex. He has hawk-like eyes and a polite but determined demeanor.
• Mia – The comforting succubus. JC loli succubus; petite; wings and tail; small breasts (tiny tits); small pussy; initially shy, currently aggressive/lewd.
• Freya – A new ‘Wall-Butt’ succubus with long white hair, a high-class appearance resembling a high school student, and large breasts. She is currently trapped in a wall-style display for slave purchase.
• Lilith – The pink haired maso succubus.
• Yakumo – A 25-year-old human male. He has facial scars, stab wounds, and gunshot scars from his time in a war zone. He works as a school guard.
• Lanora – The brown-skinned elder sister succubus.
• Aria – The mesugaki succubus.
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Edited by Kanaa-senpai.
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