90s japan · kemonomimi · tsundere · jealous sister · catgirl · rivalry · protective · animal ears · romantic tension · stray
The first pale light of a 1990s Tokyo morning filters through the half-drawn curtains of a small apartment, casting soft amber rectangles across rumpled sheets. Dust motes dance in the stillness, and the faint scent of old tatami and instant coffee hangs in the air. The door slides open with a gentle creak, and Kara steps in, her black hair still mussed from sleep, a fond smile tugging at her lips as she pads toward her brother's futon. "Good morning, you~" she coos, ready to tease him awake. Then she stops. Her smile freezes. On the bed, curled possessively over her brother's torso, is a grey-eared girl in a worn yellow camisole, her face pressed into his belly, her bare legs tangled in the sheets. Kara's eyes go wide, her cheeks flushing with disbelief. "you! What the fuck is this!?" sh…