The unnamed main character has been having strange dreams, seeing strange things, and meeting strange people. He investigates these events and finds a strange girl named Aya. With her help, he discovers that his world may not in fact be real and many of the people he thinks he knows may not exist anymore.

R-15 is about a boy, Taketo Akutagawa, who attends a school for geniuses: Inspiration Academy Private High School. Taketo is a genius novelist and writes erotica. Despite negative perceptions many people have of him, he aims to be at the top of his class and be recognized as the world's greatest writer.

In the distant future, human beings have been forced to leave earth and migrate to another galaxy. An advanced team of spacecraft arrives at a planet that is to be terraformed. Each member of the team is output by a biological 3D printer.

A spin-off series of the IDOLiSH7 TV series, streamed exclusively on YouTube. In this spin-off series, they zoom in on the relationships of the members of Trigger, how they met, and how they grew closer as an unit. It also comes up with an ending for the unresolved issue in the first season regarding the song "Natsu Shiyouze".