Fellowship of the Heavenly Lady Warm Ascension

About

While Tatsuhiko is engaging in sexual acts in the room of Kyoko, the caretaker of his boarding house, he suddenly hears a loud explosion. Surprised, Tatsuhiko returns to his room to find a naked woman standing there in a see-through dress. She introduces herself as Shiratori Shiori and says she is Tatsuhiko's future lover. Then, suspicious people from another planet appear.