The ultra-violent tale of a broken killer and his yakuza nemesis that inspired the infamous film. By the author of Homunculus and HIKARI-MAN. Ichi may seem like a spineless weakling—but when the tears start flowing, a terrifying transformation takes place. Driven to his mental breaking point, Ichi becomes an unstoppable force of carnage, unleashing a torrent of violence on his next target. When his destructive path collides with Kakihara, a sadomasochistic yakuza boss with a penchant for pain, it ignites a bloody spiral of chaos, depravity, and unimaginable brutality. From the legendary creator of Homunculus and HIKARI-MAN comes the groundbreaking manga that inspired Takashi Miike's cult classic film—a shocking exploration of wrath, vengeance, and the dark corners of the human psyche.