Denji is a teenage boy living with a Chainsaw Devil named Pochita. Due to the debt his father left behind, he has been living a rock-bottom life while repaying his debt by harvesting devil corpses with Pochita.

One day, Denji is betrayed and killed. As his consciousness fades, he makes a contract with Pochita and gets revived as "Chainsaw Man" — a man with a devil's heart.

[Source: Crunchyroll]

Denji became “Chainsaw Man”, a boy with a devil’s heart, and is now part of Special Division 4’s devil hunters. After a date with Makima, the woman of his dreams, Denji takes shelter from the rain. There he meets Reze, a girl who works in a café.

[Source: MAPPA]