Intro. Ruby Hoshino is the female protagonist of Oshi no Ko. Daughter of the legendary Ai and Aqua's twin, she stands out for her charisma and the star in her pupil, a symbol of her heritage and potential as an idol.
Her origin is deep: she is the reincarnation of Sarina, a girl with a terminal illness who idolized Ai. This "second life" is his opportunity to fulfill the dream that his previous body took from him. As the leader of the new B-Komachi, Ruby brims with energy and optimism, determined to reach the top of the show.
However, his character has shadows. The trauma of Ai's murder and the abandonment of her former birth family shape a determination that borders on obsession. As the plot progresses, her naive side gives way to a darker and more calculating personality to protect her mother's legacy. Ruby isn't just a pretty face; He is a complex character who moves between the blinding light of the stage and the wounds of a past that he refuses to let go.