Kenji Miyashita

Juan "Johnny" Rico, a high school student living in Buenos Aires, joins the Federation military in the hope of following his love, Carmen, into space. He has to undergo harsh training to become a soldier, harsher than he expected, but despite several setbacks and traumatic experiences, Johnny perseveres and finishes his training. However, a war is brewing on the outer planets with a strange alien enemy and Johnny is thrust into the conflict.

When the school Karate club's star fighter quits and decides to go pro, he unwittingly fulfills an ancient interdimensional prophecy and becomes demon king of his dimension. Soon his high school becomes a battleground for demon slaying samurai, interplanetary law enforcement, and even his own traitorous demon minions. Well animated fight scenes ensue.

A naïve young girl accidentally modifies her brother's secret superhero uniform and becomes the unwilling superheroine Moldiver.