THE SMART TRICK OF OSHI NO KO MANGA THAT NO ONE IS DISCUSSING

Unbeknownst to him, Aqua's fraternal twin sister, Ruby Hoshino, is the reincarnation of Sarina Tendōji, among Gorou's sufferers who was a fan of Ai. 4 a long time later, Ai is murdered in front of the twins by precisely the same enthusiast who killed Gorou. The supporter later commits suicide, but Aqua deduces which the murderer might have experie