Tatsuki Fujimoto is a writer who is incredibly difficult to predict.
I am usually thrown for a loop every single chapter of Chainsaw Man. 
Chapter 144, “Guns, Nails, Katana”, was the exception because I actually guessed what would happen as soon as I started reading.
This is because the chapter’s very title spells out its events, which served to hype up what was about to happen.
“Guns, Nails, Katana” begins with the titular guns by having the Chainsaw Man Church members grab the weapons from the basement.
Back in the previous chapter, I thought the weapons that were being referred to were Devil Hybrids since they share the same name, but it turns out the weapons were just firearms.
Nobana is horrified by the amount of guns they have but this does not stop him and the other Church members from taking aim at the command of one of the Church’s apparent leading members.
All it takes is a mention of Chainsaw Man for the students to be ready to kill, showing just how much this Church has brainwashed them.
Outside the building, a Public Saftey Officer orders that two Special Division Agents be sent in, one at the front and one at the back.
The one who takes the front is the “Nails” part of the chapter.
They are a Fiend with their brain exposed and this detail made me think that they were a reincarnated Cosmo, since her brain was also exposed.
However, this Fiend’s reliance on hammers and nails makes me think they are Nail or Hammer Fiend.
Whichever they are, the Fiend easily disarms the students by nailing them to the walls through their clothes.
Given that the Fiend makes sure not to kill the students and that they shout out that children should be studying not using guns, it first appears that the Fiend wants to protect these students.
This makes it all the more darkly humorous when the Fiend smashes a student’s head in with a hammer when they don’t speak politley.
With the students taken care of, the unnamed man leading them then transforms into a Devil, having also clearly made a deal with the Justice Devil, just like Yuko did.
It is good to know that the Justice Devil is still in play and I am interested to see what its role is in all this.
Then, we get the moment I knew was coming ever since I read the chapter title, “Guns Nails, Katana.”
The unnamed man cries out that the Fiend will face the justice of the Chainsaw Man Church, only for Katana Man to make his return by eviscerating him from behind with his signature move.
This likely makes Katana Man the second Public Saftey Agent who was sent in the back.
As for why Katana Man would join Public Saftey after attacking them early in Part One, it makes sense when you look at who he is fighting.
Katana Man hates Chainsaw Man because Denji killed his grandfather so he would obviously be offended that a church worships him.
This can be seen when Katana Man shouts, “There is no such thing as justice with Chainsaw Man!”
So with Katana Man’s expected return that makes six out of seven Hybrids accounted for.
The only one missing is Reze so it will be interesting to see where she is.
Is she with Public Saftey or somewhere else?
Will she turn up next chapter or later in the story?
One thing I am certain of is that she will make her return at some point.
It would not make sense to have the rest of the Hybrids and not Reze.
As for Chapter 144, it was another solid chapter, which introduced the new Fiend well and ended on the great cliffhanger of Katana Man’s return.