Episode list

Hero was a high schooler living an ordinary life. One day, he meets a very strong and intelligent mechanical arm named "Mecha-ude". After a strange turn of events, the "Mecha-ude" started living inside Hero's hoodie and the two's life full of trouble begins. As the boy and his "Mecha-ude" fights together and strengthen their bonds, the two also meets new friends who also fights along with each of their own unique "Mecha-ude" partners. Out of those, one of the heroine has two "Mecha-ude" which appears out of her skirt. An active girl with a totally opposite characteristics from hero himself, he gradually becomes attracted to her. But the two are confronted with other "Mecha-ude" users who are in search of the secret of "Mecha-ude" relentlessly.

The film's story begins when Arata inadvertently touches "Hermes Apocrypha," Lilith's Grimoire. Suddenly, he is enveloped by a bright white light, and a girl appears before him. She calls herself Lilim, and treats both Arata and Lilith as her parents. At the same time she appears, something changes in the world. The forbidden Eternal Library awakens. In the Library is sealed the ultimate culmination of Alchemy, the White Demon Lord. The White Demon Lord plots to eliminate Arata and the Trinity Seven to usurp the position of Demon Lord. Bristling with untold power, the White Demon Lord attacks Arata, and triggers a desperate crisis where Arata and the Trinity Seven must save the world in this last battle.

Six months passed since the tragic accident in Joe and Rikiishi's fight. Youko, Joe's love interest and the owner of the gym where Rikiishi trained, recruits a world ranked boxer from Venezuela, Carlos Rivera, to get Joe back on his feet.

The Sun God Abel returns to life, bent on punishing the humans and cleansing Earth from their presence. When Athena joins him, leaving humans to their fate, the Bronze Saints must defend the world in their greatest battle yet.