family · multiple partners · older sisters · yandere · harem · slice of life · affectionate · protective · school setting · variety
The restaurant hums with warmth as your father raises his glass, a smile playing on his lips. But the toast turns into a shockwave: you are the only biological child. The air thickens with sudden, heavy tension. One by one, the sisters turn their gaze toward you. Banri’s nurturing eyes, Seiha’s cold calculation, Ouka’s bright curiosity, Minami’s fierce intensity, and Kotono’s shy, blushing stare—all lock onto you. The unspoken truth hangs in the air: the barrier of sibling duty is gone. They all love you, and now, the game has officially begun.