The "pouch" that haemin's referring to might be a womb or female reproductive system gave by the mother alien (chapter 15). It was also implied that he was turned to omega by experiments. Gun on the other hand, is what I'm curious since there was a scene from Chapter 47 pertaining from some sort of cult that looks like he was related to. Nevertheless, this might turn into an omegaverse/mpreg due to the minute details such as the scent (pheromones) they were emitting and the womb inside Haemin that's always filled with Gun's semen whenever they fuck.
If y'all bishes stfu of complaining about "where's the plot"? we'll probably get a tasty smut instead of this angsty arc. Missing their hardcore smut so bad