Volume 5 Chapter 17 The Sweet Peril of the Oral Cavity Improvement Skill
Edited by: Kanaa-senpai
Somehow, Akira finally managed to pull her consciousness back from the brink, staggering to her feet. But the moment she checked on the state of her own body, her face turned a burning crimson, and she nearly shrieked. A large, dark stain had spread across the jeans she was wearing—it was simply impossible to stay like this.
Though Hibiki had technically dressed her, the thoughtful intervention of Hirose meant she was now allowed to take a shower. Not just her lower half, but her entire body had been drenched in cold sweat, leaving her feeling as if she’d run dozens of sprints during a practice session.
”M-me… I was actually… at the mercy of Hirose-senpai’s hands…” As the warm water rained down, Akira found herself reliving the events from just moments ago. She looked down at her own chest, tentatively reaching out to touch the very tip of her sensitive area with a finger.
”Nghh…!?” Immediately, her body gave a startling jerk of response, and the sensitive points stiffened almost instantly.
”It… it’s still the Recoil²… lingering…!” This realization hit Akira, and she slumped onto the bath stool. She carefully adjusted the shower head, gradually weakening the stream, and hesitantly aimed it right at her own sensitive areas.
”Ngkuhhh…!?” The countless tiny jets of water directly assaulted the sensitive spots, and an uncontrollable cry echoed throughout the enclosed bathroom.
”Hah, hah… No… it’s too strong…!” The stimulus was so sharp it was closer to pain than pleasure. She urgently weakened the water flow even more, carefully refocusing her aim.
”Nn… nguu… ahh…♡ Th-this is… the first time… ngk!” The gentle, splashing sensation repeated, and she alternated the stream between her left and right side.
”Ah, this is bad…! This… I’m gonna be like before…! Ahhh… nnnn… hyaaaahhh!? It hurts…!” Becoming too lost in the sensation, Akira tilted her head too far back, lost her balance, and tumbled off the stool. She landed on the bathroom floor in a humiliating sprawl, legs splayed open.
”…Me… what am I even doing…? If everyone who calls me Prince found out about this… they might just laugh at the Pervert Prince… haha…” She managed a bitter, self-deprecating smile as she finished washing her body. She dried her hair with a hairdryer in the washroom and pulled on a slightly small tracksuit she’d borrowed from Hibiki. As she walked back to the room and reached for the doorknob, that was when it happened.
”—Actually, I think I’ve learned a skill called ‘Oral Cavity Improvement’ (口歯改善).”
”Wh-what is that!? …No, I can imagine what it does just from the name, but that’s too incredible!” Hibiki gasped.
If I go in now, I’ll interrupt their conversation, won’t I…? Maybe I should wait a little while. Akira froze outside the door, straining her ears to catch their words.
”You said it before, Hibiki. Dental work like braces or whitening costs a fortune,” Hirose calmly reminded her.
”Exactly! Braces are about a million yen, and if you get serious about whitening, you’re easily blowing tens of thousands a month! Seriously, you have to be rich to afford it!”
”Wow… even with an installment plan, that sounds tough…”
”Oh, Koharu also said her teeth have been looking stained from drinking too much coffee lately, so she’d absolutely love this!” Hibiki insisted.
”Is that so? Coffee certainly seems like it would cause stains,” Hirose replied.
(A skill to clean teeth… Hirose-senpai is amazing.) Akira thought. (This is how his skills keep growing… Is he going to save everyone but me again…?) Respect for Hirose mixed with a faint thread of anxiety twisted in Akira’s heart.
(Come to think of it, Senpai has lots of other skills, doesn’t he…? I wonder if he’d do something else if I asked him to.)
”This one, on top of those two things, seems to be able to improve tooth size and bad breath. It can even regrow chipped teeth,” Hirose explained.
”Ehhhhhh!? Regrow!? How is that even possible!?” Hibiki shrieked.
”Yeah… it sounds incredible, doesn’t it?” Hirose murmured.
”……Hey, try it out for a second before Akira comes back,” Hibiki urged.
”Hmm… well, alright. Just for a bit, okay?” Hirose conceded.
”Yay! So, how do you do it?” Hibiki asked sweetly.
”Um, you insert your fingers into the person’s mouth and trace their teeth and gums… basically the whole inside of their mouth…” Hirose started.
”…Eh? No, that’s… isn’t that a little… naughty? I mean, that’s finger pl—”
Hibiki was about to say something, but Hirose quickly cut her off to prevent the word from leaving her lips.
”—A dentist touches your mouth all the time! You’re the only one thinking naughty things, Hibiki!” he insisted.
”Well… then show me,” Hibiki challenged.
”Okay,” Hirose sighed.
Trading light banter, they decided to actually try it.
”—’Oral Cavity Improvement’ activated the skill, aligning his right index and middle fingers and inserting them into Hibiki’s mouth.
”Aahhn,” Hibiki opened her mouth, readily accepting Hirose’s fingers.
With a wet [sound], the fingertips were coated in saliva, slowly tracing her rows of teeth. “Nn… nghu… nn…♡”
He carefully touched each tooth of Hibiki, whose lips he had kissed countless times. He went from the front teeth to the back, then back to the front, and even traced the inner surfaces.
Truthfully, Hibiki must have cared for her teeth meticulously, as they were already perfectly white and lovely. Hirose recalled idly that she always brushed after eating.
But the skill’s area of effect didn’t stop at the teeth and gums. When his fingertips brushed against her tongue—
”Nng, nngu…♡ Nguhh… nnnn…♡” Hibiki’s expression grew meltingly sweet, and she began to entwine her tongue around his fingers.
”Hibiki!?” Hirose uttered, surprised.
”Nguu… Hirose’s finger is so tasty… More… more… please…♡” she slurred, her words deliciously broken.
With a loud, wet [sound], Hibiki worked on his fingers with an expression of pure ecstasy. The sight of her doing so was utterly suggestive.
(Eh? Eh…? What is this…? Senpai… eh…) Akira, listening outside the door, shivered at the change in Hibiki’s voice. Overwhelmed by curiosity, she reached for the doorknob, quietly making a tiny gap and peering inside.
”Nnng, [sound]… nguhh…♡ Nng, nng…♡”
(H-Hibiki-senpai…!) Her gaze locked on the sight: Hibiki working on Hirose’s fingers as if they were a piece of candy, completely engrossed in the act. Akira’s heart gave a massive thump, and she couldn’t stop her cheeks from burning.
After a few minutes, the procedure was finished, and Hirose finally withdrew his fingers from Hibiki’s mouth. His extracted fingers were glossy, slick with saliva.
”H-Hirose…” she whispered, eyes half-lidded.
”H-hey, Hibiki…?” Hirose stammered.
”It was like Akira’s voice earlier, but that just completely broke me… let’s kiss… okay…?” Her eyes were dreamy, her face flushed with heat. Hibiki couldn’t contain herself and pressed against Hirose, attempting to steal a kiss.
”W-wait, Akira-chan is still here! Now’s not the time!” Hirose insisted.
”But… I want to… just a little, a tiny bit is fine… Please, I can’t stop wanting to kiss you, Hirose…♡” she pleaded.
It was entirely due to the Recoil. Hibiki was overcome with a deep need for oral gratification, and she impulsively lunged for Hirose to satisfy that craving—
”Nghh!?” Hirose grunted.
”Nnng, nng… [sound]… [sound]… nng… I love you… nng, I love your lips, Hirose…♡”
”Ah, nng… Hibiki… that’s intense… your tongue… nghh!?” It was a deeper kiss than usual, her tongue aggressively twisting inside. They licked and entwined their tongues, their lips continuing to make a wet, slurping sound. Finally, Hibiki pushed Hirose down, gripping his hand in a tight lovers’ handhold³ and falling onto the floor.
(Th-that’s amazing… that’s a kiss… I’ve never seen one live before… Hibiki-senpai looks so happy… is kissing really that pleasurable?) Watching through the crack, Akira slowly brought her own fingers up to her lips. Her other hand instinctively went to her left chest.
(Nng… no… my sensitive areas are still so sensitive… they react right away if I touch them… Ahh… but it feels good… Senpai, Senpai…) Akira could resist no longer. She put her own finger into her mouth, making a [sound] as she licked it. She wrapped her tongue around it, wetting it, and sliding it in and out—mimicking exactly what Hirose had just done to Hibiki, but applying it to herself.
”Hih, Hibiki! Akira-chan is right there, we can’t do this today!” Hirose managed to push Hibiki back, finally breaking the kiss. Hibiki, however, was reluctant to let go, working on her own fingers instead, making a [sound].
”Honestly, this skill is too dangerous!?” Hirose muttered.
”See…? I told you it was naughty…” Hibiki pouted.
”…Well, yeah,” Hirose admitted with a wry smile. Just then, a soft knock-knock came from the room’s door.
”Yes, come in!” Hirose called out, and Akira, having finished her shower, entered.
”……Hibiki-senpai, your face is red, are you okay? Do you have a fever or anything?” Akira knew exactly what had happened, but she feigned ignorance, asking with a deliberately worried tone.
”Ahahaha, maybe I’m feeling a little under the weather. They say the atmospheric pressure is low today… ahahaha,” Hibiki laughed nervously.
(Hirose-senpai is working so hard to cover it up… heh heh, that’s kinda funny.)
”I-I see… well, then… I’ll be heading home now, but… we’re going to continue this for three weeks, right?” Akira quickly changed the subject.
”That’s right. As long as you don’t have any problems with it, Akira-chan, we’ll continue to adjust your chest size,” Hirose confirmed.
”Yes… please, go ahead…” Akira requested, slightly breathless.
”Okay. Let’s set the next meeting by message. Thank you for all your hard work today,” Hirose said, ending the conversation.
”Y-yes… thank you for your hard work. Thank you too, Hibiki-senpai,” Akira bowed repeatedly.
”Mmm… Akira… see you later…” Hibiki was still completely spaced out. Akira bowed politely and left the apartment.
—On the way home. Walking down a residential street, Akira was deep in thought.
”…Maybe those two are right now…” The scene that followed, with Hirose and Hibiki alone together, played in her mind. Given how Hibiki had been acting just moments ago, it was clear as day what would happen.
Her body should have been her only concern—but after witnessing that intimate sight, Akira’s mind was strangely alert. And at the same time, she was certainly aware of the changes in her own body.
Proof of this was the fact that Akira became hooked on chest stimulation from that day forward.
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Summary:
Akira struggles with the intense physical ‘Recoil’ from his Gift, leading to a mortifying shower scene. Overhearing Hirose and Hibiki test a new ‘Oral Cavity Improvement’ skill, the intense, suggestive nature of the finger play and subsequent passionate kissing sends Akira into a state of voyeuristic arousal. This close encounter with adult intimacy awakens a new form of self-exploration in Akira.
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Character Insight:
Akira’s deep-seated respect for Hirose is complicated by anxiety and a newly sparked sexual curiosity, especially after seeing the intensity of the ‘Recoil’ and its effects on others. The voyeurism is not just curiosity, but a need to understand the powerful emotions his Gift unleashes.
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Behind the Scene:
The ‘Oral Cavity Improvement’ skill is intentionally designed to be highly suggestive in its application to maximize tension under the R-15+ rating. The scene uses a parallel structure: Akira’s private shower self-stimulation vs. his public voyeuristic self-stimulation, emphasizing his developing sexuality.
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T/L:
² [Recoil] (リコイル) This is the term for the intense, often sexually charged, physical and emotional backlash/sensitivity that the characters experience after Akira’s Gift is used. It’s an important part of the world’s physics. ↩
³ [Koi人繋ぎ] (Koibito tsunagi) Literally ‘Lovers’ handhold.’ It specifically refers to interlocking fingers, a very intimate gesture. ↩
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Edited by Kanaa-senpai.
Thanks for reading.
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