GVG-821 — Sister R** Diary Mai Imai

A brother and sister move into a new house and end up living in the same room. Mai, the older sister, tries to draw her brother naked for her university art club activities, but her brother's penis gets hard... This is the story of the seven days in which the brother and sister fall into a forbidden relationship after sharing a room. The adorable smile, sleeping breath, and young, attractive body of the sister who is close to him drive the brother crazy.