Rentarô Aijô decides to date all of his soulmates after Hakari Hanazono and Karane Inda confess to him at the same time God of Love tells him that they will die if any of his soulmates fails to get into a relationship with him.

In a future where their kinds maintain an uneasy coexistence, a human investigator and an android travel to Mars to hunt down a group of revolutionaries.