"Actually, we wanted to give Brother-in-law a surprise~" Momo said with a bright smile.
"Surprise? More like a jump scare," Shichen shook his head.
"Really?"
Momo leaned closer, whispering at his ear, "Brother-in-law, you really didn't like it?"
"You're too sharp," Shichen said, vigorously ruffling her hair until her pink bob was a complete mess.
"Hehe~" Momo didn't mind at all and just laughed happily.
"You two… what are you whispering about over there?" Nana frowned suspiciously and questioned them.
"Nothing at all~"
"You think I believe that?"
"Why are you so hung up on it? Shouldn't you be busy savoring what it felt like to kiss Brother-in-law?"
"S–Savor? Who's savoring it?!" Nana snapped back, flustered and loud.
" tsk tsk tsk~ You looked pretty into it just now," Momo clicked her tongue, teasing.
"I was not!" Nana's face went bright red as she kept denying it.
"Okay, okay, I get it, Nana, you're just tsundere. But try to keep it in check~ Tsunderes aren't popular anymore, being honest is better," Momo suggested.
"Who's tsundere! Who needs to be honest!" Nana just kept denying, her pretty face full of agitation.
"Okay okay, if you say you're not, you're not." Momo shook her head perfunctorily.
"You…!"
"You two really do love arguing, huh. Anyone who doesn't know better would think you don't get along," Shichen sighed.
"I don't get along with her!" Nana said immediately.
"Heh~ I can tell at a glance how good your relationship really is."
Nana: "…"
Even if she wouldn't admit it out loud, she really did like Momo. Their daily bickering was something she actually enjoyed.
It's just that lately, the topics of their arguments really weren't to her taste—and it was all because of him!
Nana glared fiercely at the back of Shichen's head, biting her lip in anger.
He'd kissed her. And not just a tiny kiss—a full-on intense one—and then said absolutely nothing about it?
Just taking advantage and then acting like it never happened?
She cared about that. A lot.
Shichen really hadn't thought that far about it. The two of them showing up the way they did was so abnormal that he felt the end result was mostly Nana's own fault.
Well, okay, he had some responsibility too, since he'd been the one to initiate.
But hey, she also refused to admit they'd swapped bodies. If she'd been honest from the start, it wouldn't have been so easy for him to make a move.
Regretting it now wasn't going to change anything.
"Momo, you and Nana are back, so that means… you actually persuaded your father, right?" Shichen asked to confirm. He really didn't want to be happy for nothing.
"Mm! I didn't expect Father to agree so quickly. Now I can live here with Brother-in-law," Momo said happily, hugging him, her face blooming with a sweet smile.
"Live together? Can you not put it like that?" Nana couldn't help but cut in.
"What's wrong with that? We don't have to hide anything anymore," Momo said smugly.
"You… this was your idea, wasn't it?" Nana turned to Shichen.
"Yep," Shichen admitted without hesitation.
"I knew you're a womanizing scumbag! You already have my sister and you're eyeing Momo and…" Nana snapped her mouth shut before she accidentally included herself.
"I admit I'm a womanizing scumbag, but that's only because it's you girls~" Shichen said with a grin.
"W-What do you mean us?" Nana glared at him, furious and flustered.
"Brother-in-law, what do you mean by that?" Momo asked curiously.
"Mm… simply put, meeting you two makes me really happy."
"Really? I'm really happy too!"
"Hmph! You're a playboy, just be a playboy. Don't dress it up with all that nonsense," Nana said, arms crossed, lips curled.
"True, I got nothing to refute that," Shichen nodded.
"It's okay~ I don't mind. Actually, I'm glad Brother-in-law is a flirt. Otherwise, there wouldn't be any room for me by his side," Momo said cheerfully.
"Momo…"
Now that was a perfect little sister-in-law.
"Brother-in-law…"
Momo met Shichen's eyes, both of them full of emotion, and naturally, they began to lean in closer.
"Hold it right there!" Nana jumped between them immediately.
"Hey, what do you two think you're doing, all of a sudden? I'm still right here!"
"Ugh~ You're being such a third wheel, Nana," Momo said, annoyed.
"You… Momo, what is going on in that head of yours? You seriously don't care that this guy is such a flirt? What if he falls for even more girls in the future?"
"It's fine. Brother-in-law is going to inherit Father's throne someday. Having a harem is totally normal, isn't it?"
"You… then you'll just get less of his love."
"Well… Brother-in-law, are you going to love me less?" Momo turned to ask.
"No," Shichen shook his head, gaze sincere.
Whether love would "decrease" or not wasn't something he could define in a neat way—and he did genuinely like a lot of people.
But no matter what, his feelings for them weren't going to lessen. Even before he could meet them, separated by entire worlds, he'd already liked them that much.
How could seeing them in person make him love them less?
"Brother-in-law… I believe you!" Momo said, moved.
"Momo," Shichen looked at her, feeling just as touched.
With a little sister-in-law who trusted him so unconditionally, what more could he possibly ask for?
"Brother-in-law…"
Momo couldn't hold herself back from wanting to kiss him again. She rose onto her toes and leaned in toward him.
"You stop right there!" Predictably, Nana cut in again.
"...You're really annoying, Nana," Momo said, giving her a sideways look.
"Don't you dare do that in front of me!"
"Why not? You and Brother-in-law have nothing to do with each other. What, are you jealous?"
"Who's jealous?!"
"Then what right do you have to stop us? If you don't want to see it, you can leave."
"I'm not leaving! I'm… yeah, I'm protecting this guy's relationship with my sister! I absolutely won't let you win!"
"Big Sis, huh… pretty sure she wouldn't mind~ Besides, I've already gone this far with Brother-in-law~" Momo said, puffing out her chest and pressing it against Shichen.
"You…!"
Nana's gaze dropped straight to that area—the rounded curves and emphasized shape—and she practically seethed.
Momo was clearly provoking her!
So what if she was bigger?
What's so great about that?
She could ask her sister to help her later if she really wanted!
…
"Eh—Momo, Nana, what are you two doing here?"
At noon, when Lala and the others arrived and saw them, she asked in surprise.
"Hehe~ Sis, we're here to live with you," Momo said as she massaged Shichen's shoulders, smiling brightly.
With Nana here, she and Shichen hadn't done anything too intimate yet—just some shoulder massages and the like.
"Live together?"
"Yup. We've already told Father we want to live on this planet with you."
"Really? That's great!" Lala said sincerely, clearly delighted.
"Sis…" Nana looked at her older sister's pure, heartfelt joy and felt a pang of guilt.
Her sister loved them so much, and yet she and Momo had done that kind of thing with this guy. As little sisters, it really did feel shameful.
Even though she knew their sister genuinely didn't mind, and might even be happy to live together with them in the future, that was only because she was simple and kind.
Nana couldn't treat it like nothing.
It was all that guy's fault!
She glared at the back of Shichen's head with simmering resentment. If he hadn't been so flirtatious, none of this would have happened.
And it wasn't just that he was a flirt—he even confessed to her!
Trying to have all three sisters…
How could anyone be this shameless?
And on top of that, after kissing her, he didn't even say anything about it!
Just completely unbothered, huh?
Sure, it had been Momo's body at the time, but she had felt everything.
And he'd kissed her own body's lips too, hadn't he?!
"Hm? Nana, what's wrong?" Shichen suddenly turned to look at her. He thought he'd just felt a wave of pure resentment.
"Hmph! Nothing at all!" Nana huffed and turned her head away.
"?"
"Sis, don't worry about Nana. She's just overly dramatic," Momo said, turning his head back into position.
"You're the one who's dramatic!" Nana shot back.
Momo ignored her and continued asking Shichen instead, "Brother-in-law, there seem to be two people we don't know here. Can you explain?"
She was talking, of course, about Mikado Ryōko and Murasame Shizu.
"Oh, them? I'll explain when we get back. It's about time to make lunch."
"Okay~ I'm starving. I haven't had Brother-in-law's cooking in a whole week, I missed it so much," Momo said, eyes sparkling.
"Then from now on you can eat until you're sick of it," Shichen replied, enjoying the massage.
This time, he wasn't going to let his little sister-in-law leave again.
"I won't ever get sick of it," Momo said.
"You two… Sis is right here, you know," Nana muttered, face dark.
"Mm? I'm here, so what?" Lala blinked innocently.
"Sis, you seriously don't see what's going on with those two?"
"They seem great," Lala said with a bright smile.
"..."