The hero lives next door to Hiro, who has known him for two years. He convinces her to have sex with him.

Yayoi is a sexually frustrated housewife with a workaholic husband whom she loves, but lately hasn't been paying her the attention she needs. She begins to fantasize frequently. A coincidental encounter with a nice young man from the neighborhood who has a crush on her is too much for her self-control.

Yoshiharu Hayami has always been in love with his older sister Sana. However, his sister decides to leave their house for certain reasons, leaving Yoshiharu worried that his feelings for her might go unnoticed. Unwilling to let go of her, he musters up his courage to confess, as well as taking something very important to her... [Written by MAL Rewrite]

Asuka has been having internet sex with her childhood friend, Ryou, but is bothered by the fact that he hasn't noticed that it's her, until he unknowingly confesses to her.