For the Murder of Evil

Characters from Fairy Tail, Magi, Splintered, Shugo Chara, and many other series get together to solve a murder mystery.
Everything is going fine at a party on 37 Main Street until the lights go out and someone dies. No blood or anything except a piece of paper saying that it's for the greater good: The Murder of Evil.
Thirteen people at the party. Who did it? And how many will survive before the culprit is found?

For Wattpad contest.