Maya and her brother Kenshi attend the same school. The two have been secretly having a physical relationship. However, Maya acts cold but lovable, the so-called 'tsundere,' towards her brother in public. One day, Kenshi hears a rumor that Maya has a boyfriend in the same class. Unable to contain his jealousy, Kenshi takes Maya around and has intense sex with her, ejaculating inside her, all over the school…
