Secret Staycation with My Girlfriend’s Sister

Synopsis

Amakune Sayoko and Harase Ariotomo begin cohabiting in preparation for marriage. When Sayoko’s family home undergoes renovations, her parents move to a rental closer to work. However, her shy younger sister Emiru’s school is farther away, so she temporarily moves in with Ariotomo to stay near her school.

Emiru struggles with social interactions and initially barely speaks to Ariotomo, but gradually warms up over time. Then one day, while studying together, Emiru begins touching him—not by accident, but pretending it is. She clings close, intentionally brushes her legs against his, and gazes at him with an awkward yet strangely seductive expression.