Tickle prison 3 (Pixiv Fanbox)

When prisoners are not ticklish during the evaluation, they are sent to this part of the prison for "reconstruction". Their senses gets heightened with the help of the laughing gas monsters. They will put gas in your mouth so that you have to laugh, then they also tickles you endlessly as to confirm the effects and at the same time, the gas raises your sensitivity to touch. People who feel they can endure the prison is pretty much out of luck with these monsters.