Responses
I actually interpreted the "placebo" title as him being unaware of having been hypnotized and believing to have been himself during the things that happened while he was under hypnosis which affects his personality/behaviour
Seeing that the title is Placebo instead of Hypnosis then this is probably gonna end up more worse. The MC is probably gonna be convinced he's hypnotized even though not in a hypnotic state, to the point he can't differentiate what's real and not.