Ririko' who secretly thinks of the senior 'Saiko' who works at the same workplace... When I met my boyfriend who was dating Saiko by accident in the city, a malicious intention in "Ryriko" wakes up... Ririko' that gently cares for 'saishi' in the heart of injury to an unintentional farewell... Saiko, who allowed her to have a relationship with people because of her misfortunes, put her trust in Ririko.