Chainsaw Man 1-2-3-4 manga set (4 books)

Deiji is a poor young man who hunts demons for money with his half-demon dog Pochita. While he spends his days in misery struggling with his debts, his entire fate suddenly changes because of a betrayal! The curtains are opening for an action-packed heroic adventure in which Denji goes from adventure to adventure, starting to hunt demons with the power of the demon dwelling within him!