Yandere lemon

Brutal killings are happening, but here's the twist.. it's by the most popular guy in school, Zach Rider

My Yandere Onii-chan ! [Yandere ! Big Brother X Innocent ! Little Sister Reader]

You live with your overprotective older brother--Astra. But, you didn't mind, he's the only blood-related family after all, you wouldn't want to lose him. But, what happens when strange deaths starts to happen to people who are dear to you ? What would you do ? -Slight gore -lemons (if requested) -vulgar language -su...