Tenkyu No Kill Logger summary:

Morinaga Hiromu saw his parents killed by a murderer and was injured himself. Fortunately, he managed to survive but since that day, he can see ghostly things. On a rainy day, what appeared was the death of a human being carried by a person carrying it on his back-a "murderer's resume" that emerged when a murder was committed. Behind the transfer student, Yuzuka, who came to his class, there are a lot of suffering faces... Is the mysterious girl an angel or a devil?