Hotaru is up for an honor student prize against an older student. Whoever wins in a robot fighting match will get the prize. Another robot that Hotaru built to resemble Mikan, Amanatsu, wants to help. The robot is sad when Hotaru tells her she doesn't need her help so Mikan tries to find other things that Amanatsu can do to help Hotaru. All efforts to help end in failure but then Mikan and Amanatsu hear that the older student is going to cheat in the match. Amanatsu enters the match to stop him and ends up finally being able to help her beloved Hotaru.