No matter how much damage is done early on, those worlds can still be forcibly given a happy ending. No matter how awful and evil the male lead is, he still has to be redeemed.
I've had enough.
So.
Your dad is here!
A summoned student in an interstellar world
A sworn enemy in a school setting
A cultivation furnace in a world of immortal cultivation
An honest man who stumbles into a wealthy family
Theme: Protect yourself and stay away from awful people
