
seems like it
it would also explain why the old guy wasnt particularly invested in saving runaway jaheon recently, despite being the one that first saved him from monster mugo
he's not particularly invested in keeping the sacrifices safe as long as he doesnt feel guilty for it, so he wouldnt tell a sacrifice how to tick him
but i guess the hidden personality would

yh that’s what I was thinking as well. The 4th guy I’m p sure is the oldest and I’m p sure he knows mc is the reincarnation of that man we saw in the flashback, that’s why he got saved. I think the other 3 were manipulated into thinking they had to kill the sacrifices, but the 4th one probably knows the truth??? Idkk

Jaheon met glasses mugo when he was little but the one who told him about the sweet thing is this new entity. Glasses mugo didn't realized he shifted because he acted very surprised in this last chapter to meet that entity and remembered that moment. So when adult jaheon brought the cake when he came as the sacrifice, glasses mugo was summoned, as he likes sweet things, and was pleased. Also, he recognized Jaheon. He saved him by giving him his blood and wanted to let him go probably because he notice the other personalities became obsessed with Jaheon and they forgot their duties as 'God'.
Wait I’m confoosed…the old man wasn’t the one that told mc to bring something sweet? It was the possibly 4th personality?