I think yiseon used the invisibility potion that he got from the person that's with them way back when they were still alive. When they raided a dungeon, then I think the leader of it has some invisibility potion, I think yiseon used it to make his friend invisible to people's eyes....
But again bro was bombarded by cameras and he cant carry the dead ppl out from the dungeon no?
Yeaaa, been wandering that thought for a while when I read that part, but I created some scenes on my head, like after all that commotions yiseon brought his friends back, he made them follow him to their home. That's only my own scenes hehe
How did his friends even end up in the apartment with no one seein them?