What may have happened to Pochita when Denji met him at the start of Chainsaw Man?


I've just caught up to the manga and I don't know if I missed this information
or not, but how did Pochita end up in the state he was in at the start of the
series? He looked like he had gunshot wounds.

From what I've seen, the Chainsaw Devil is very strong and I assumed that if
he was killed in hell, he would end up on earth without injuries so that rules
out that he was defeated by the Gun Devil in hell. Which means he was injured
while on earth. Not to mention he also seems to be kinder and looks different
too. So is Pochita a Fiend formed from the Chainsaw Devil taking over the
corpse of a dog? And if so, could fiends make contracts with humans? I thought
only devils could do that?

Sorry if this was information provided in the manga. I sometimes read this
series just before going to bed so some details might have drifted away from
me.




Pretty major spoilers from chapter 84, but

> In chapter 87, Makima states that he "disappeared" in a fight with the Four
> Horsemen and the other Weapon Devils. In chapter 84, we pretty explicitly
> saw him literally tear through hell, so it's likely that he used the last of
> his strength while he was fighting the other devils to escape, leading to
> him collapsing in front of Denji. Edit: I checked again in chapter 84, and
> it _seems_ like him escaping was due to the hell devil's door still being
> present, so it's not explained if there are ways of getting out of hell
> other than dying or through the hell devil




Pretty major spoilers from chapter 84, but

> In chapter 87, Makima states that he "disappeared" in a fight with the Four
> Horsemen and the other Weapon Devils. In chapter 84, we pretty explicitly
> saw him literally tear through hell, so it's likely that he used the last of
> his strength while he was fighting the other devils to escape, leading to
> him collapsing in front of Denji. Edit: I checked again in chapter 84, and
> it _seems_ like him escaping was due to the hell devil's door still being
> present, so it's not explained if there are ways of getting out of hell
> other than dying or through the hell devil

