
I feel like the "Placebo effect" refers to his feelings toward Woo-jin rather than towards the hypnosis in itself. Earlier in the season I remember Woo-yeon telling Woo-jin to stop doing what he was doing because people where behind the door. It shows that his mind is capable of resistance during hypnosis if he truly doesn't wanna do it. It's messed up but we know the author IS messed up, just like her characters. I will still hope for an ending where Woo-yeon is free from his weird ass brother.
I have trouble believing he's truly drunk. It's probably just an excuse to unveil his true feelings. I still despite his ass but I do admit it was cute. I also find endearing how Doc Dan show his affection by covering his partner with kisses lmaooo