The Squishy Little Undine
"Kyuwoo?" I stared at the mini Undine rolling around on my palm like a child. "This little one... that's Undine, isn't it, Founder?"
"Yep! I peeled off a bit of the squishy one. You can be happier about it! Hehe.."
Nero had been healed by Undine once before, but she had been unconscious at the time and didn't seem to remember it clearly. Thanks to that, while Nero was startled and fell off the bed because of this tiny invader, the black-haired girl didn't miss the opening and climbed right onto my stomach, burying her face in my chest.
"You kept her in your pocket and she's only coming out now?"
"Be happy about it.. If the Team Leader or the President finds out about this, hup."
I cut myself off in a hurry, suddenly worried there might be listening devices or cameras in the bedroom, but if that were the case it was already too late. A call should have come through immediately, yet the fact that it hadn't meant..
"If it's some nasty trick that clown girl set up, I've already erased all of it, so it's fine. I'm used to it."
"Is that so.. No, it is not fine!"
Once again, the girl answered as if she had read my mind, leaving me flustered. After all, no matter how friendly Undine was considered, she was still a containment subject with a Risk Level of 6. On top of that, whether because she was so small or because she was separated from her main body, I couldn't hear her inner voice—only the occasional cute sound she made.
"Kyuuung.."
Yeah, just like that. The mini Undine, who had been rolling around every which way, suddenly flopped onto her back on my palm and pressed her face against it.
"Chyop.. Chyop."
"Hik? She's sucking on my hand!"
Without thinking, I had only found the mini Undine cute, but now a cold sweat broke out on my palm as I worried she might just melt and swallow my hand whole.
"Kyuuu!"
Yet somehow.. she seemed happy?
"Mm-hmm, good job. The squishy one likes dirty, filthy, and.. evil things the most—completely the opposite of me."
I still had no idea what she was talking about. More importantly, I needed to have a proper talk with Founder right away..
"Why? I only granted what big brother wanted, didn't I?"
"...?"
Seeing Founder's eyebrows tilt into an angry expression, I remembered this had happened before. When I had nearly been killed by Rav's rampage through her ability, Founder had saved me. Of course, her method hadn't been particularly gentle, but the intent itself had been kind toward me. Right now, she had simply read my worries first and offered the simplest solution she could provide.
So if I just blamed her here, it would only turn into an argument where neither of us understood the other.
"That.. I really am grateful for your concern."
"Hehe, I knew it!"
I felt relieved watching the girl finally relax her sulky expression and bury her face in my chest again. Of course, this wasn't something I could just let slide.
"But if you bring a containment subject outside without permission from the Team Leaders or the President, a lot of people will end up in trouble."
"Uum.. But I don't really care if other people have trouble. I just don't want big brother to have trouble."
That part genuinely made me happy. I still didn't fully understand why Founder gave me special treatment, but..
"If other people have trouble, then I have trouble too. Founder, if you had something your little sister cherished, you wouldn't treat it carelessly even if it didn't interest you, right?"
"Uum.. I guess not?"
Perhaps because I had given an easy-to-understand example, she nodded obediently. The most relieving thing right now was that Founder was actually listening to me.
"I thought big brother would like it if I gave him the squishy one as a present.."
A present, huh.. She really was incredibly cute. She had been sucking on my palm for a while now, and the ticklish sensation actually felt nice.
"Like I said, I really am happy about the thought."
"But I thought it through properly too.. The squishy one is really docile, so she won't cause trouble even outside. She'll stay quiet. If I just make her bigger, we'll be able to talk to her right away.."
"If we can communicate with Undine, there won't be any more problems. So how do we do that.."
Just looking at her appearance, it seemed like feeding her water would make her swell up quickly..
"You just have to feed her big brother's poop."
"..."
".. You don't like that?"
Of course I didn't. Strangely enough, imagining the situation didn't leave me completely unmoved, but repaying Undine—who had kindly healed me multiple times—with something so filthy felt repulsive. Apparently the tray full of unseparated trash I had left in front of Undine's room earlier really had been her meal.
Even so, this was a separate issue.
"Ah!"
I looked at the girl whose eyes sparkled as if she had thought of something, but all I felt was anxiety. And my anxiety was usually accurate. This time was no exception.
"Then big brother's white, hot, lumpy, sticky stuff is fine too! You fed that to your mating partner last time and she swallowed a lot of it. That one even licked it up like it was delicious, saying it was a waste to let it go."
"W-wait a second, Founder—"
"It was also full of that filthy desire to crave the other person, so the squishy one will definitely like it too. If she eats a lot, she'll grow quickly."
Describing my chaotic act with Rav so explicitly while Nero was right beside us made me suspect Founder had some hidden intention to embarrass me, but the girl was smiling innocently as if she truly believed it was a great idea.
"Big brother thinks so too, right?"
"Uh.. um.."
I couldn't help glancing at Nero, but to my surprise she only shot me a timid glare and didn't say anything harsh. If anything, she looked a little deflated..?
"Is there no other way?"
"Uum.. Like right now, big brother's sweat or saliva or even skin flakes should be enough to fill her up at this size.."
"Th-then let's go with that method."
"Why? You're not going to show me?"
Show her what? Surely she wasn't expecting me to masturbate in front of the mini Undine?
".. I wanted to see it, but big brother is so mean."
She wasn't, right..?
"Hmph, fine. I'm going to sleep now. The squishy one already seems to like big brother, so if I sleep she'll wander around on her own and clean everything up."
Wander around..? And on top of that, those soft little lips had been sucking on my skin with little smacking sounds for a while now—there was no way I could sleep with that ticklish feeling..
"Eeeh, so noisy."
Poke. The girl's short fingertip only lightly poked my forehead, but my vision immediately wavered and I felt my consciousness drifting far away. By the time I belatedly tried to react with a "Huh?", everything around me had already turned black, and sleep had claimed me.
*
Thud. Nero, who had watched her master collapse and fall asleep the moment the girl's finger poked his forehead, quickly came to her senses and bared her claws even though she knew she stood no chance.
"What did you do?!"
Regardless, the girl-shaped blob of blue liquid that had slid off his palm because of his limp arm was now clinging to his nape, sucking on his skin with little smacking sounds. Just one abnormally long-haired girl invading their precious nest with her master was already too much—now there was one more unknown entity..
.. And it was in the shape of a woman again.
"I only helped big brother fall asleep. He said he has to wake up early and get ready tomorrow."
".. He really just fell asleep?"
"Yeah, so don't make any more noise and come lie down. I'm going to sleep too."
"I.. I'm fine."
But Nero quickly shook her head and turned toward the bedroom door. She wasn't in the mood. There was a reason. She had just learned from the conversation between the girl and him that his family was sick. Even after returning home from work, he had only said he was taking tomorrow off and hadn't shown any sign of it even in front of Nero or the girl—so unless someone could read minds, there was no way to know. Yet watching the girl who had tried to do something for him (unlike herself) and even received thanks, Nero felt both jealousy and self-reproach.
Thud! But the black-haired girl wouldn't allow it.
"What are you doing? I told you to lie down here..?"
Nero grabbed the doorknob that had closed on its own right in front of her face, but it didn't budge no matter how hard she pulled.
"Big brother is kind, so he was just being considerate so you wouldn't worry. Don't you know that? You're so dumb."
".. I know that. I'm just upset, that's all."
"You like big brother that much?"
"..."
Nero thought it strange that the question came up now, but her heart answered honestly that of course she did.
"Why do you like him?"
She had clearly only answered in her mind, yet the perfectly timed follow-up question made her flinch. It felt like facing her master's ability, but this was reality—and knowing that didn't mean she could do anything about it.
"Well, he's my savior, and he's good at petting, and he's kind, and.. No, why do I have to tell you this?"
"Ehehe, I see~"
Unable to resist the strange feeling, Nero had ended up rambling before catching herself and stopping, but the black-haired girl was stroking her long hair with a knowing expression and nodding.
"What? What is it.."
Nero thought she mustn't let herself get swept up in the girl's pace, but there was no opponent harder to steal the atmosphere from than an honest, bright child.
"The jealous cat wants to mate with big brother, right? Then I'll help you."
"Wha.."
Nero was dumbfounded watching the girl tap the empty space beside her master with her small palm along with the outrageous suggestion. What was even more absurd was that she herself had turned away from the door, tempted by those words.
"That's why you were shaking that inconveniently bouncy body so vulgarly in front of big brother. Right?"
"I-I never shook it vulgarly..!"
"You're interested in mating, especially with big brother.. Because every time, he gives off such a delicious smell."
".. A delicious smell?"
Realizing she had added an unnecessary remark, the girl smiled and closed her mouth. Yes, a delicious smell. When they were focused on mating in the narrow room, it would fill with a lewd, foul odor that made her not want to approach, but that warmth.. or rather, heat, and the scent that pierced through it and reached all the way beyond the window, making her mouth water—that was definitely big brother's. At first she had only liked how good he was at petting, but.. even if she would get thoroughly scolded by her beloved little sister later..
She had ended up catching a whiff of that scent—so delicious she wanted to devour him right away without holding back.