Bath time for the Kiryuin sisters was one of the rare times that the two were on the same wave length, yet not at all at the same time. Yes, even though the elder was nineteen, and the younger eighteen, they took baths together. They thought nothing of it, seeing it as something they would have been doing anyway if they had grown up under the same household.
It was also a coping mechanism for them both since Satsuki was deathly afraid of taking baths by herself, (thanks to their touchy late mother, being anywhere near a body of water by herself caused a nauseating panic attack) and Ryuko couldn't get out of taking a bath with her because of that. It was kind of a silent agreement to just bathe together now that they lived under the same roof.
The muggy air inside the tub made Ryuko's hair stick to her face. She lowered herself into the large tub, sighing in content. Leaning back, she stared at the ceiling, letting the warm water envelope her. She hummed, enjoying the quietness of the water dripping from the faucet.
She frowned a bit when the door opened, letting in the cold outside air in. "Oi, Satsuki, why do you always have to get in a million years after me?" She questioned, her eyes still closed. She felt her sister's movements thanks to the quick rush of air that gushed every time she walked past. It gave her goosebumps much to her dismay.
"You know exactly why, Matoi." Satsuki deadpanned, letting her towel drop at the base of the pool. Ryuko heard it frump beside her arm. "If I could take a lot less longer, I would." Satsuki had something of a ritual to help ease her mind and prevent her triggers from happening. Yoga with scented candles. Which Ryuko thought smelled like feet and carpet. Not to mention it annoyed the hell out of her when Satsuki got up at the asscrack of dawn to do her yoga before school.
"But you won't, so here we are." Ryuko bit back. She opened her eyes and startled a bit when she saw that the older girl was right in front of her, staring at her. Her eyes darted, searching Satsuki's face. It was as stoic as ever. "What?" she asked nervously.
"You've...developed." Satsuki concluded, tilting her head as if she was looking at a fine piece of art in a museum. She looked a little confused too. Which confused Ryuko in turn.
"Huh?" She stammered.
"You're breasts. They've filled out. It appears you've finally hit your last leg of puberty. You've also gotten taller. Almost as tall as me." Satsuki attempted to reach out for her sister's chest.
Ryuko swatted her hand away. "Don't do that! That's creepy! Creepy McStalker Pants! Have you been watching those lame incest animes again?!" She shouted crossing her arms over her chest protectively, giving her older sister a wide eyed look.
Satsuki gave her a judo chop over the top of her head. "No. I don't watch those ridiculous things. Inumuta does. I just sometimes sit in on them." She folded her arms and frowned. "Honestly. How could you ever think I would stoop to such foolishness?"
"Do you think he gets off to the thought of us fucking?" Ryuko wondered, as she settled back into her relaxed position again. "You know, because he has an incest fetish."
"Such eloquent words."Satsuki scoffed, rolling her eyes. She put a hand to her chin. "Though, the possibility crossed my mind a couple of times, yes."
"Heheh. Do you think the big ape and Uzu join in too?" Ryuko sneered in laughter. The thought of the three of them furiously beating off made her snort.
"Are you implying that my men masterbate to the thought of me having relations with my blood related little sister?" Satsuki asked her with an eyebrow raised.
"Oh come on, Bushy Brows." Ryuko insisted. "You don't see the way they look at you? You practically give them boners every time you wear a dress or those skinny jeans that make your ass look awesome."
Satsuki gave her an incredulous look.
Ryuko quickly backtracked. "N-Not that I look or anything." She averted Satsuki's gaze by staring at the ceiling again, feeling the heat rising to her cheeks. "I mean, I think you're pretty. I mean, like really pretty- But not in a incest kind of way. I mean before I used to think- I mean before I knew- Fuck!" She threw her fists down into the water, making it splash.
She unwillingly looked up at Satsuki who gave her an amused and smug look.
"Does little sister have a crush on her big sister?" The older girl asked derisively, the smirk on her face mocking Ryuko and making her feel angry and embarrassed at the same time.
"N-No! I-" Ryuko stuttered. "Fuck you!" she yelled defiantly.
"And here you thought I was the one who was into the whole incest thing." Satsuki's condescending tone made Ryuko frown.
"S-Shut up!"
Satsuki's smirk grew wider. "Make me." She challenged.
Taking Satsuki by the sides of her face, Ryuko pulled her in for a surprise kiss. When she let go, Satsuki was wide eyed.
Ryuko was just as aware as she was, and she sunk lower into the bath. "We never speak of this!" She declared.
Satsuki wiped her lips, still astounded. "Agreed." She breathed.