Nisemono Kazoku: Gifu ni Ochite Iku Musume

Two sisters live with their stepfather after their mother remarries. At first, they maintain a distant but polite relationship with him, trying to adjust to their new family life. However, as time passes, the boundaries between them begin to blur, and hidden desires start to surface.

The stepfather finds himself drawn to both sisters, and they in turn become entangled in a web of forbidden emotions. What was once a fragile family unit slowly transforms into something far more complicated and intimate, as each character struggles with their own feelings and the consequences of their actions.