I got sick with a strange disease "If I don't have sex once a day, I'm sick with ○ disease". - She is a virgin and has no female friends, let alone a girlfriend, and is on the edge of despair. However, Akari, a childhood friend who lives next door, was worried and came. "I don't want to be gone, because I don't have anyone else to deal with. It's okay because it can't be helped," and for each other's first SEX. Akari, who had a sense of duty, also began to enjoy playing with each other in daily SEX. - However, Akari's boyfriend came ...