hoshino_aquamarine
Main protagonist of Oshi no Ko. He is the son of Hoshino Ai and the twin brother of Hoshino Ruby.
He has blue eyes with a_star-shaped_pupil_in_his_right_eye and short blonde hair with hair between eyes & swept bangs.
He is voiced by Uchiyama Yumi as a baby & child, and by Ootsuka Takeo as a teenager.