HE ending, the male protagonist is clean, no other men or women intervene
It's a relatively reasonable amount of abuse. But in the early stages, the male protagonist is still a bit talkative, so he deserves to be abused.
The early stage is a bit sadistic and can be skipped without affecting the understanding of the subsequent plot.
The female protagonist really used the male protagonist as a substitute, and the male protagonist was willing to
Later, when we get together, the female lead is absolutely dominant