The "sixth sense" is the ability to perceive nature with one's "heart" and transform it into "power." One day, Ruo, a boy from the lowly "Fallen World" who dreams of the skies, comes into possession of a "relic," unearthing the carcass of the monster Tetsuzin. However, it contains forbidden power that must not be touched! (Source: Magapoke, translated)

A martial arts champion is merely someone who has reached the top within the bounds of rules.The true strongest is someone who has reached the top in a "fight" with no rules at all!! A delinquent boxing unfolds place at the worst delinquent high school, where a battle for the top spot unfolds with just his fists!!