Spoilers for anyone else reading this just in case.
It was in Korean so I only have a vague idea but we get a bit of backstory and explanation for the masked dude. Thaddeus fights him but its a losing battle and right at the end of the chapter, old Peter joins the fight.
If he dies I’m gonna scream. And cry. Someone spoil me. Because I refuse. He’s not gonna die cause that’s so stupid and predictable. He’s not.