Kare no Ochinpo wa Sanshimai no Mono

Teshigawara-ka no Isourou follows a young man who becomes a live-in boarder at the Teshigawara household. The family consists of three sisters, each with her own distinct personality and desires. Living under the same roof, the protagonist finds himself entangled in their daily lives and intimate dynamics.

As the arrangement progresses, the boundaries between guest and family member blur, leading to increasingly personal and explicit encounters. The sisters' individual motivations and the protagonist's own hidden feelings create a complex web of relationships that challenge the household's balance.