Denji is a teenager who lives his life as a Devil Hunter.

Aiming to pay off the debt he inherited from his father, he starts hunting devils for the yakuza with his buddy Pochita, a "Chainsaw Devil", while living a tragically poor life.

Just when things seem like they couldn't get any worse, Denji gets betrayed and killed by the yakuza. As Denji starts passing out, he hears someone calling from inside his head...
You're as loyal as a dog,
،أنت وفيٌّ كالكِلاب
Du gehorchst wie ein Hündchen,
Eres obediente como un perro.
Eres obediente como un perro
Tu bosses pour pas cher
Sei obbediente
Você é leal como um cachorro
Мало того что покорный как пёс,