Aquamarine Hoshino, also known as just Aqua, is the male protagonist of the anime series, Oshi No Ko. In his past life, he was Gorou Amamiya, the doctor who was in charge of Sarina Tendouji and Ai Hoshino. After being murdered, Gorou was reborn as Aqua Hoshino, the son of Ai Hoshino. After watching his mother murdered by a crazed fan, Aqua is now on a vengeful path to find out who sold out his mother.