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...
I've heard some devils 
can take over dead bodies.
سمعتُ أنّ بعض الشّياطين يستطيعون
الاستحواذ على الجثث
Ich hab gehört, manche Teufel
können in Leichen schlüpfen.
Dicen que hay demonios que pueden
poseer el cuerpo de gente muerta.
Dicen que hay demonios que pueden
poseer el cuerpo de los muertos.
Il paraît que les démons peuvent
prendre possession d’un cadavre.
A quanto pare alcuni Diavoli sono capaci
di possedere il corpo di un morto.
Ouvi que tem uns demônios que
conseguem se apossar de cadáveres.
Вроде как некоторые демоны
могут вселяться в трупы людей.
ฟังมาว่ามีปิศาจบางตัว
สามารถเข้าสิงศพของมนุษย์ได้