Rud raids the treacherous labyrinths, uninterested in fabled riches but desperate to cure his sick sister. Kicked out by a conceited hero, Rud heads home empty-handed until he rescues a girl who exposes his unparalleled protection.

The craftsman Saitou has never felt special in his life. When he is transported to a medieval fantasy world, he gathers a group of unique creatures around him in order to survive.

When an island half-disappears from the face of the earth, a mysterious organization sends out invitations for a tournament to every skilled fighter in the world. "If you win you can have ANYTHING you want," they claim. They're recruiting only the best to fight the best and claim the title of The God of High School. Jin Mori, a Taekwondo specialist and a high school student, soon learns that there is something much greater beneath the stage of the tournament.