SSIS-066 On the fifth day of peeping at my crush, the beautiful-legged sister next door, I finally got caught… but was seduced and had crazy sex. Hikari Shinomiya

Takurou, a rōnin student, starts peeping at Ichika who has moved into the neighboring apartment. To Takurou, Ichika is his childhood friend and someone he has always admired. Due to his gloomy and reclusive personality, all he can do is watch her from afar. As days go by with him constantly peeping, his desire to get closer to her grows overwhelming, leading him to cross a line he should not have. He braces himself for being reported, but to his surprise, she starts seducing him, and they end up having sex every day.