I heard of this 1 or 2 years ago and I have a horrible memory so I can't really remember w...

I heard of this 1 or 2 years ago and I have a horrible memory so I can't really remember what it's called. All I remember was 2 guys met each other online and they made a deal to kill someone for each other or something. One had a rabbit pfp or something. I remember they also end up meeting irl because they go to the same college. Sorry if this was a super crappy description because I really can't remember. If anyone knows the title please tell me!