@Ajiood well it's trueee, since the game requires someine to sacrifice... But I was actually looking at the situation as a 3rd person in their real world, like since after they came back to their real world, pi bada was recognize as seongchan's cousin after their memory was erased... so somewhat pi bada indeed exist in the real world( I think) and now I'm thinking that maybe seongchan just disappear like a bubble... But oh well, the concept of the story it self is very confusing
Spoiler!
I don't know why I choose reading bl as my hobby... Now I'm screaming, crying, laughing, cursing, tweaking, and much more roller coaster of emotions like a mad man in the middle of the night