Mai Sawaguchi and Reo Kawamura seem far from friends. Despite Mai constantly trying to get along with Reo, they always end up fighting. However, when Mai questions Reo on whether or not she hates her, Reo ends up confessing instead. Confused and surprised, Mai begins to wonder if she feels the same. After school, she meets Reo again, prepared to give an answer. Agreeing that their feelings are mutual, the two girls begin to use each other to fulfill their sexual desires.

A Kiss for the Petals

An asteroid collision brought with it a deadly menace known as "Shinobi." Faced with destruction, humanity retreated to land reclaimed from the sea. The one ray of hope is a device that can fight the Shinbo called "The Mechanical Divine General." Ame, the princess of the refugees, and Suō, who carries the blood of the Yagyū family, must awaken its power in order to save the world.