Notice Me Senpai!! - Yandere Simulator

I don't even know what to say, it's strangely addicting and even though it's only 5% done at the end it leaves me wondering.... why?
Why is this even a thing??!?!

Yandere Simulator is a stealth game about stalking a boy and secretly eliminating any girl who seems interested in him, while maintaining the image of an innocent schoolgirl.