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...
They don't pass devil 
carcasses onto the yakuza.
لا يُسلِّمون جِيَفَ الشّياطين للياكوزا
lassen die Teufelsleichen nicht
mal eben an uns Yakuza rüberwachsen.
No nos venderían a nosotros, los yakuza,
los cadáveres de los demonios.
jamás entregaría a la mafia
los cadáveres de los demonios.
un vrai ne nous filerait pas
les dépouilles de ses proies.
non darebbe il cadavere di un Diavolo a noi Yakuza.
não passam carcaças de demônios
para nós da Yakuza.
Они нам, бандюкам,
ни за что тушку демона не уступят.