Can you guys help me find a fic. I dont know the title or who wrote it, and its driving mr nuts.

Well, actually I don't even know if its actually a fic. I saw a trailer for it on Youtube like a few weeks ago. And i kinda wanna check it out (or at least know the title). Please help!

Okay, so its a Sichul fanfic.

All i remember is that Siwon is Heechul's stalker. And whenever someone gets close to Heechul, siwon kills them off. And i think heechul knew about it , too but he can't stop himself from falling in love with Siwon.

Does anyone remember the title? 

Thanks so much!