The op isekai harem MC are in my opinion an exaggerated backlash against the nearly useless ones we used to have in shounen, especially haremromances but also action shounen. Seeing the MC win without getting beaten to a pulp everytime was pretty refreshing when this kind of isekai became...
The ass girl is such a horrible person. It's killing me that she's going to join the harem and everyone will act like she never did anything wrong even though she got people suspended and expelled for no other reason than her being a childish little bitch.
How is it possible to be able to swim only 10m, either you get how swimming is done in witch case you could go until you run out of stamina or you can't swim at all and end up getting nowhere. This isn't the first manga I've seen these short distances cited as the MC limit for swimming.
abusing your authority to coerce someone into sex is rape. Example: hold a gun to a persons head and tell them to have sex with you, tell them to act like they're willing. That's rape. MCs threat is implied(perhaps unintentionally) and the consequenses of refusing sex might not be as immediate...