Follows Yuta who repeatedly drew and then erased Gridman in his notebook, which he vaguely remembers. Then he decided to confess his feelings to Rikka, and their life in such a peaceful world begins to crumble with a roar.

Gridman Universe

Devils that lurk within humans, and family that is deemed irreplaceable to humans. With these two words, a new story in which familiar characters clash with passion.  After a long battle, the Igarashi Family and their friends have finally achieved peace. However... a new threat that transcends Giff, the progenitor of the demons, has appeared.