A talent bestowed upon a monster. Is it a blessing—or a curse? K, a legendary boxing trainer who has produced numerous world champions, is searching for his “final disciple.” Then he encounters Yu, a boy in a back alley who simply stands there, taking punch after punch. The boy shows neither anger nor fighting spirit, yet K sees in him something beyond genius: a talent of unfathomable potential.

Under K’s guidance, Yu steps into the boxing ring. With an overwhelming strength that can only be described as monstrous, he begins his ascent toward the pinnacle of the boxing world. Standing in his way are champions who stake their pride on skills honed to perfection, and fighters who have overcome the limits of talent through sheer effort. Each carries a dream they refuse to surrender and a reason to keep fighting. Their clashes with the monster shake even the foundations of the lives they have built.

And what does Yu himself seek at the end of his fists? The life of one “monster” intertwines with the lives of those who fight him. Beyond talent and hard work, glory and defeat, a story begins—one that asks what it truly means to be strong.
(Source: Crunchyroll)