Oh em. That would be one hell of a plot twist. Bada being the actual NPC and someone else being the real player (maybe Doha?). And this might be the reason why Doha does not want to end the game, because Bada will once again forget about him if he completed the game? I know there a re actual games where a player helps out the main character who is just an NPC. Maybe that's the case here?
yes!! like i might be completely off the mark here. but some stuff i'm still hung up on:
-doha can kill but bada can't (i wonder if the other two could? how did the previous sessions go?)
-according to jaeseob, seongchan and him teamed up first, and then bada joined them after, possibly after being let in on the situation by the other two
-doha's apparent lack of morality (something that seems inhuman, but makes a lot of sense for a human playing a game.) but then again even if doha is a player i don't think he's currently aware, necessarily
no smart thoughts but i feel like we're taking the "fact" that bada is a real person for granted. might as well be another npc. might be the reason for the missing memories if doha or someone else hasn't been messing with them (ig that's more likely but still)