Unbeknownst to him, Aqua's fraternal twin sister, Ruby Hoshino, may be the reincarnation of Sarina Are inclined?ji, one among Gorou's sufferers who was a admirer of Ai. Four many years later, Ai is murdered before the twins by exactly the same fan who killed Gorou. The fan afterwards commits suicide, but Aqua deduces the murderer may have experienc