My childhood friend Tetsuya has been living with his mother, Himeno, since his father passed away. Himeno is beautiful and innocent... I found myself getting flustered and excited just looking at her. One night, I stayed over at Tetsuya's place, and I saw a faint light coming from Himeno's bedroom. Even though I knew it was wrong, I peeked inside and saw her alone... I couldn't help myself and ended up taking advantage of her.