Okay so, I've been searching but I just can't seem to find this anime I watched a while back. It's about a school girl with blonde pigtails and normally wears all pink clothes. She seems to be a heir of some sorts if I remember completely. Their's a boy mc as well that has brown hair and glasses they are in the same school and it seems like he was hired to protect her at all costs. He states he hates violence but kills killers. (Weird I know but I'm pretty sure he says that.) Anywho the girl has this thing where she falls in love with serial killers if she ever gets near one, that's when the boy tells her to show him who it is and then he executes them. I've been searching everywhere and I just can't find the name of the anime. Does anyone know what I'm talking about, just so that I can stop feeling like I dreamt this anime or something? 😕

I don't know about an anime like that, but the manga that immediately comes to mind after reading your description is Boku to Senpai no Tekken Kousai.

Ahhhh!! That's the one ! I guess my mind just remembered it as an anime >.< ! Thank you so much !