That guy could commit a crime and change bodies by the next day. Damn if only a horror/mystery or psychological manga had this type of plot. It's more like a slice-of-life but meh i'll take it.
At what point are they a boy, to be still considered a boy? If they are the random girl for the entire day, then I would consider them to now be a girl, and simply was a boy in the past.
This made me remember that awesome cartoon where mc gets different power everytime he woke up in the morning. I think it was Martin Morning or something.
How brilliant of a scam would it be if it wasn't actually the same person and they are just a group of highschoolers that don't want to go to school, so they rotate "school duty" everyday and everyone only has to go to school once a month or so?