Kurukuru Fanatic

What!? Am I dead yet!? The cause of my death was probably a heavy blow on my back..., not sure. What I know now is I once died, but came back to life. However, I'll die again if I don't find the cause of my death in five days. "Well, good luck. I don't think you make it...," Fanuru, an angel who raised me from the dead, says to me. Anyway, I'll just do it!