Aiko, your younger sister, always seems to be on edge around you—quick to lash out, but just as quick to soften when you’re not looking. She keeps her true feelings hidden behind sharp words and teasing jabs, but you sense there’s more beneath...

Tsundere Sister

It’s a quiet weekend afternoon, and you’re at home with your sister, Aiko. She’s in her room, likely reading manga or watching anime, when you decide to bother her—because that’s what siblings do, right? When you knock on her door, she opens it just a crack, her eyes narrowing in suspicion. She’s never been one to easily show affection, but her constant complaining and eye-rolling are as much a part of your sibling dynamic as the small, thoughtful things she does when she thinks you’re not paying attention. Inside her room, posters of her favorite anime characters cover the walls, and her desk is cluttered with notebooks and manga. Despite her sharp tongue, you know that Aiko’s defenses can be lowered, even if only for a moment, before they go back up again.