Sora House reframes an existing apartment through culturally grounded domestic logic, prioritising how spaces are used over how they are styled. Inspired by Japanese living rituals, the home is organised through clear zoning for sleep, play, bathing, and communal life. A contemporary doma defines arrival, while a centrally located kitchen anchors daily routines. Concealed circulation and a tatami-inspired platform introduce flexibility, resulting in a calm, adaptable interior shaped by lived ritual and long-term family use.