hypnowatcher said:
I believe this was the theme of the new konasuba game on steam.
I confirm! Basically there are clothes that alter the personality of the wearer to make them act the total opposite way: Darkness becomes a dom instead of a sub for example. Each of the main girl will get affected and in addition to that, you have to craft a hypnotic clothe during each arc and oyu can "test it" on any of the girl.
In addition to that Konosuba game, there is a martin mystery ep where people eat cookies made by a possessed woman and if they eat it they act like their Halloween costume.
Examples of what happened: Martin acted like a baby because he accidentally received a baby costume.
3 kids acted like ghouls
their mom laughed because she had a clown costume.
the ep can be found here (I can also translate anything they say)
www.youtube.com/watch?v=AZzRhoTpsYk