The entire premise is kinda ruined when none of the characters understand how a cock ring works. There she misunderstand that they prevent ejaculation, and the whole scenario send to be built around this incorrect idea
After being caught peeking inside a college girl's bathroom by the police, you've been convicted and sent to prison that is run by females on a secluded island as punishment. Not only that, they have put a magical thin cock ring on the base of your shaft that denies you of getting an erection or ejaculating. Your g...