As the number of times you have sex with a specific girl increases, her reaction may begin to change. She may begin to enjoy it!
...so please enjoy her reaction from her very first rape, because it only happen once.
At this school there are various forms of support available via magic or special abilities. One of this is semen replenishment. After having sex with a large number of girls you can be refreshed back to normal with no side effects. So go ahead and indulge your carnal desires as much as you want!