
I'm confused, Anyway who mark him first?

The guy who previously marked him passed away for some health issues. You can see that on chapter 2 page 27, the omega arrives home and says "I'm home" even tho no ones there... meaning that he's saying to the guy that passed away that he's home.
And on chapter 3 page 29 - 31, you can see the omega
(idk his name) remembers what it used to be like with his previous partner. (aka before he died)
There is a bit more info on this but imma let you look for it :)
(just pay attention and read every pannel and you will get it)
I feel like a smart a$$ :D
and if your wondering no I had nothing better to do so I decided you revive your brain :D
follow me on the gram = @hoof._.ie
your welcome (⌒▽⌒)
I'm in love!!!