Itsuka Tenma no Shirogane Kitsune

"Don't die seven times within fifteen minutes and you'll be able to stay forever with me with this immortality." Seems simple enough, but unfortunately, it's not, at all. With some MORE problems, a malicious demon, a hot-tempered exorcist, her sullen younger brother, and a whole host of other weird characters, how can you not die? Ara x Add x Chung x Elsword. Other pairings!