>>287391197Unrelated but there was a novel i read where an MC reincarnates as a prince and starts doing stuff to eliminate derranged heroines who would dare ruin his happiness.
In one instance, he put a trap on a secret castle entrance located in the courtyard where he put piano wire so whatever heroine would crawl there would get entangled and would not be able to get out.
Needless to say, a heroine DID crawl into there and got caught by the wire, he proceeded to shovel dirt, burying the heroine in the process and later became fertilizer for the plants there.