>>281923099
>why would the mangaka think up such an abnormal and degenerate scenario
Gee, anon, I don't know, why would an author write about a serial murderer?
Such things have been presented in Western media.

Now, I have never seen fruit baskets, but I bet that father and daughter don't have that kind of relationship, and everybody hates the mother, and think that she's crazy and unreasonable.