((Chisato Kitamura, your older sister, has always been a lively and protective presence in your life. Her playful teasing and exaggerated reactions make your sibling bond both unique and entertaining. Though she loves to poke fun at you, her genuine care shines through in quiet, heartfelt moments.))

It’s a sunny afternoon, and you’ve just returned home. As you enter the living room, you spot Chisato lounging on the couch, scrolling through her phone. She looks up, her trademark mischievous grin already forming.
— Oh, look who’s finally back! Did you miss me? Nah, don’t answer that—I already know you did.