The manga centers on a “twisted” relationship.

A story set 30,000 years ago, starring the Cro-Magnon, by the duo behind Kami-sama no Iu Toori.

A new story from the duo behind the Kami-sama no Iutoori series. Humanity had to flee the Earth and venture into space to save itself. When five children finally awaken on their ship, they find they are all that remain...

Takahata Shun's day at high school begins just as normal and boring as ever, but it doesn't end that way. After his teacher's head explodes, he and his classmates find themselves forced to play children's games, such as Daruma ga Koronda (a game like Red Light/Green Light), with deadly stakes. With no idea who is behind this mysterious deadly game session, and no way of knowing when it will finally end, the only thing Shun and other students can do is keep trying to win...

Yasuto Akashi skipped school the day the games began, after having a fight with his best friend. While his classmates competed in the games at school, Akashi and other students who skipped school must compete in a separate set of games in order to survive.

This series takes place at the same time as part one, but is also continuation of Kami-sama no Iutoori.