A Collection of Short Stories About Yanderes Going Dark

I'm turning childhood cringe into short stories featuring the male leads I like~

1: [Merfolk] A proud, unloved mermaid princess x a pitiful, autistic boy who is unexpectedly saved

2: [Childhood Friends] A pampered, domineering childhood friend x her well-behaved, top-student childhood friend

This is just for my own amusement~

Theme: A collection of short, satisfying stories about yandere characters turning dark!