Two little sisters-in-law: one tsundere, one gentle. Shichen's days started getting very colorful.
The tsundere one, Nana, was also a bit submissive. Whether at home or at school, if Shichen got even slightly forceful with her, she'd obey.
During PE, when he secretly pulled her aside just for a quick kiss, she'd get insanely nervous, terrified that Momo or some other classmate might notice.
Because of that, she didn't dare fight back at all—always in that "want to refuse but actually not refusing" state.
It was… pretty fun.
The only pity was that she was too embarrassed to take the initiative.
But that part, the other little sister-in-law made up for.
Momo might be gentle, but she had a bit of a black belly and loved playing on the edge.
At home she often took advantage of moments when nobody was paying attention to cuddle with Shichen—hugging and kissing were the basics. She'd even grab his hand herself and put it someplace for "heartbeat checks," all while making sure no one else caught her.
She really loved doing that kind of thing.
At school she was even bolder, skipping class all the time to come hang out in his office, eating and drinking with him.
Who knew if she was starting to like eating it… or liked being drunk by him.
Either way, Shichen wasn't losing out.
Maybe alien physiology really was different from the people on this planet; she was actually sweet.
Incredibly refreshing.
But after half a month, Shichen still hadn't progressed further with Nana—stuck at kissing and "helping her develop."
He'd only tricked her into the development massages because she was so hung up on being small. He just told her that if the person she liked massaged them, they'd get bigger, and she fell for it instantly.
At first she couldn't handle it, all tense and flustered, not really cooperating—but under Shichen's skilled hands, she quickly melted.
Now she couldn't go a day without at least three massages.
Once in the morning to get her out of bed, once before sleep, and one sometime in between whenever he could find an opportunity.
And always secretly—no one else could know.
As long as there were more, never less.
She really wanted to "grow up."
Girls really care about this too much. Clearly, size doesn't define a girl's charm.
At least that's how Shichen saw it. The girls today are just poisoned by this kind of thinking.
There must be girls out there who don't care about size at all—maybe even girls who prefer being smaller—but Shichen hadn't met any yet.
Every girl around him cared; the only ones who didn't fuss about it were the ones with… plenty of "capital."
Though, thinking about it, a girl's obsession with chest size wasn't really any different from a guy's obsession with the size of his "little brother."
Only the ones with enough "capital" are chill about it.
Putting himself in their shoes, he could understand. Understanding is peace.
…
"Brother-in-law~ wait for me to come play with you~"
"…"
Watching Momo and the others head toward the teaching building, Shichen waited until their figures disappeared before turning to walk back to his office.
Lately Momo's words were getting bolder and more flirtatious. Everyone could hear the teasing, but of course Lala didn't care at all.
A girl with such a pure mind simply wouldn't overthink it.
Nana, on the other hand, was getting increasingly jealous over the things Momo said.
Maybe Momo wasn't actually trying to provoke Lala—but Nana instead. Twins really were natural bickering partners.
Back in the office, Shichen glanced over some paperwork. Nothing important, so he left it.
He propped his feet up on the desk, folded his hands behind his head, leaned back in the chair, and let his thoughts drift.
He was already looking forward to Momo coming to "play" with him.
He couldn't help it—flirting with a little sister-in-law was way too addictive. But PE was third period; he'd have to wait a while.
Should he go play with Ryouko for a bit first?
Just as he was thinking this, he suddenly raised his head, brows knitting as he stared through the ceiling in a certain direction. His line of sight slowly shifted… until it landed on his office door.
There was no movement outside, but a moment later, a knock sounded.
Shichen lowered his feet from the desk, sat up straight, and put on a serious expression.
"Come in."
As soon as he spoke, the door slowly pushed open—and a girl bursting with youthful energy walked in.
She was incredibly eye-catching: short, dark-red hair, with a long scorpion-braid trailing all the way down past her heels, flicking around with a life of its own.
Her outfit was really breezy: all black, similar in style to Golden Darkness's leather getup. Her top was a hooded vest that only covered the lower half of her chest, leaving her entire stomach bare.
Her skin was fair, her belly flat, bellybutton tiny and cute.
Her shorts were short with a trailing tail, just barely covering the lower curve of her butt. A pair of long, pale legs were completely exposed—slim, straight, and almost translucent.
Her features were delicate, and the instant she saw Shichen, she broke into a bright smile—radiant and almost unreal, yet strangely captivating.
The moment he saw her, Shichen recognized who she was. No wonder he'd sensed a presence similar to Golden Darkness's, yet somehow different.
"You're the principal, right~?" The girl asked with a playful smile, walking toward his desk.
"I am. And you are?" Shichen smiled back without putting on any airs.
"My name's Kurosaki Mea. I want to transfer into this school. Is that okay?" The girl—Kurosaki Mea—batted her eyes at him and asked in a cutesy tone.
"It's not impossible, but…"
"Awesome!" Mea didn't even let him finish before she hopped up happily. Her trailing hem swished, and the not-insignificant size up front bounced along with her.
Judging by the movement, she probably wasn't wearing anything underneath.
"I knew you were a good guy, you know."
"Hold on, I'm not done talking yet." Shichen stopped her.
"Hm?" Mea blinked and looked at him, confused.
"You said your name is Kurosaki Mea?"
"No need to be so formal, just call me Mea." She waved it off.
"Alright then, Mea. I can let you transfer into my school, but you should at least give me a reason, right?"
"A reason?"
"That's right. I don't know you, don't know your background. If I just put you into my school like this and something happens, what then?"
"Oh, true… so I need a reason too. Master didn't tell me that part." Mea pressed a finger to her smooth chin and muttered to herself.
"Master?" Shichen obviously caught it and asked.
"Ah, don't mind that." Mea quickly waved both hands.
"Fine…"
"A reason… Well, my big sister goes to this school. Does that work?" Mea asked.
"Your big sister?" Shichen feigned ignorance.
"Mm. You know her too. In fact, I'm pretty sure she's your woman."
"And you mean…?"
"Golden Darkness!" Mea said proudly, talking about Yami.
"Yami? You're saying Yami is your big sister? I've never heard her mention she has a little sister."
"She doesn't know about me yet. But…"
As she spoke, Mea's scorpion-braid swished around, circling her body. The tip glowed and transformed into a sharp blade.
"Since she's your woman, you should know her ability, right? After seeing this, do you still think I'm not her little sister?" Mea asked with a grin.
"Shapeshifting ability, huh? It really is the same as Yami's."
"Right~ Since you're Sis's man, that makes you my brother-in-law. Brother-in-law, let me transfer into the school, okay~?" Mea came around the desk and hugged Shichen's arm, clinging to him as she whined.
She let her guard down completely, hugging him tight. Shichen could clearly feel the softness and bounce.
"'Brother-in-law,' huh… Fine, I'll accept you as a transfer student," Shichen said. He really had no resistance against that form of address.
"Yay! I knew you were a good person!" Mea cheered, and without a second thought, leaned up and kissed him on the cheek.
"You…" Shichen was a little stunned by her boldness.
He'd been prepared, but this was beyond what he expected.
"Hm? What about me?" Mea looked at him innocently.
"You know you can't do that to just anyone, right?" Shichen reminded her sternly.
"Haha~ What are you talking about, brother-in-law? Of course I know you can't just do that to other people, but you're my brother-in-law. Do you want more? I don't mind~"
"Let's not," Shichen refused with a shake of his head.
"Eeh~ Is brother-in-law really that timid?"
"It's not about being timid. Who knows if you acting this affectionate isn't part of some scheme? It's not like I don't know about Yami's situation."
"Eh? So that's what you think of me… Well, I guess it's good for you to be a little cautious."
"Mm. Also, change your outfit. Just switch to our school uniform. And from now on, don't dress so revealing in front of outsiders."
"Brother-in-law, why are you talking like some old man?"
"If you don't listen, I'll revoke your transfer," Shichen said seriously.
"Eh? Okay, okay, I'll listen." Mea said, and as she spoke, the skimpy outfit she was wearing lit up—and in the next second, transformed into a proper uniform.
Not a hint of skin showing anywhere.