Mangetsu meets Anna at school in a chance encounter, and Anna tells her that Shingetsu ruined her family. During lunch the next day, Mangetsu tells Shingetsu that she wants to participate in GRANBELM. Shingetsu offers to help her, but at that moment, a car carrying Anna and some of her family passes by...

Mangetsu experiences her second GRANBELM. As the battle grows more intense with all the girls` emotions running high, Mangetsu and Shingetsu struggle against Nene`s ARMANOX, JI GUAN LONG. But all along, another mech is approaching them...

Nene reveals her identity to Mangetsu and Shingetsu, vowing to fight them fair and square. Then, on the next full moon, Mangetsu and Kuon face off against JI GUAN LONG together according to a plan they devised before the battle, while Shingetsu draws Anna away from them. As shots are exchanged, Mangetsu finally figures out where JI GUAN LONG is...