Unbeknownst to him, Aqua's fraternal twin sister, Ruby Hoshino, would be the reincarnation of Sarina Have a tendency?ji, amongst Gorou's patients who was a admirer of Ai. 4 several years later on, Ai is murdered in front of the twins by precisely the same lover who killed Gorou. The lover afterwards commits suicide, but Aqua deduces the murderer co