Ruby Hoshino/Plot

Prologue Arc
As Sarina, Ruby was a big fan of her now mother, Ai Hoshino. She wanted to get reincarnated as her daughter and to have a face like her. With due time, her wish gets fulfilled as she is born as Aqua's younger twin. However, only a few years after that, a crazed fan takes her mother's life and Ruby loses the idol she treasured both in her previous and current lives.

Entertainment World Arc
After Ai's death, Ruby starts working hard towards her goal, striving to become an idol like her mom was. When she was still in middle school, she applied to a massive audition, but her application got rejected due to Aqua secretly meddling in. Shortly after, she was scouted to be an underground idol, but after serious talk with Miyako Saitou, she forms her own group and gets signed by her adoptive mother's company and Ai's former idol agency, Strawberry Productions. Ruby then joined by Kana Arima, whom Aqua asked to join in order to make Ruby's dream come true.

Dating Reality Show Arc
Ruby and Kana were both featured on a video by the Youtuber managed by Strawberry Productions, Pieyon. After a grueling workout session, Pieyon asks them both about their idol group's name. Ruby decided to name the group after her departed mother's idol group, B-Komachi.

The First Concert Arc
Ruby makes a Youtube channel where she and her group uploads videos with the help of B-Komachi's new member Memcho, a renowned Youtuber. They hit the milestone of 10,000 subscribers there. Later, they receive an offer from one of her brother, Aqua's acquaintances to participate in one of the biggest idol concerts across the country, the Japan Idol Festival. Even though Kana, another member of her idol group, disagrees with the idea of newcomers debuting in such a prestigious event, Ruby and Memcho convinces her to accept the invitation. Hence, the revived B-Komachi go on to deliver their first performance on the grand stage, earning rave reviews from fans.

2.5D Stage Concert
Ruby tries to visit Aqua during his rehearsal for the stage adaptation of Tokyo Blade, but did not manage to meet him, learning that he has leave early to go someplace else. Later on, she appeared on the opening night for Tokyo Blade, watching the performance along with Miyako.

Private Arc
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Main Story Arc
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Scandal Arc
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