Chapter 1

Dog & Chainsaw (とチェンソー,) is the first chapter of the Chainsaw Man manga series.

Summary
A young man, Denji, calculates how much debt he had left, and then goes to kill a Tomato Devil as part of his devil hunting job. Getting paid for it, and paying his bill, he is left again with almost nothing for food. The old man that hired him, explains to his driver that they are making the kid pay for his dad's debt. The driver then offers 100 yen to Denji, if he eat the cigar bud and Denji happily agrees, but as the driver leaves, he spits it out.

At their place, Denji is enjoying his bread, saying he heard you can eat it with jam as such is how the "normal" people eat it. He then recalls when his dad died and the old man told him he needs to pay his dad's debt. He then met Pochita, thinking the devil was going to eat him, but saw Pochita was injured. Denji then offered a contract with Pochita, giving him his blood, but in exchange he will be helping him survive too and as Pochita agreed, Denji became a devil hunter.

While still in bed and dreaming how he wants to eat bread with jam, going out with a girl, he coughs blood, mentioning his mother died from a heart condition and was also coughing blood. The old man came telling him he had a devil for him to kill. The old man takes him to an abandoned building, where they backstab Denji and Pochita, revealing to be a Zombie Devil who turned the old man and his men into zombies as they tried to make a contract with him. The Zombie Devil then orders his zombies to kill Denji and after which they throw him in a dumpster.

Inside the dumpster some of Denji's blood gets into Pochita making him recall a memory of Denji mentioning that he heard some devil can take over dead bodies and that if he dies, Pochita can take his body and fulfill his dreams. Pochita then heals Denji and turns into his heart.

Denji wakes up and comes out of the dumpster, surprising the Zombie Devil that he was still alive. As zombies come for him, Denji pulls the new cord coming out of his chest, turning into Chainsaw Man, ripping the zombies and then killing the Zombie Devil. Denji then proceeds to kill every single one of the remaining zombies. Soon after that Makima comes and sees all the dead zombies and upon seeing Denji, she realizes he was neither devil, nor human. She asks him if he kill all the zombies, but Denji barely standing asks her to hold him. As she did, he turns back to human. Makima then gives him two choices, be killed by her or becoming her pet and as a pet she would feed him. Hearing he would be getting bread with jam and other things for breakfast, Denji agrees.

Characters

 * Denji (First Appearance)
 * Pochita (First Appearance)
 * Tomato Devil (First Appearance) (Death)
 * Zombie Devil (First Appearance) (Death)
 * Makima (First Appearance)