Kana meeting Aqua for the second time | 推しの子 Oshi no Ko - Episode 2

婦人科医の雨宮吾郎は、憧れのアイドル星野愛の出産を人知れず手伝うことになる。しかし、藍の出産当日の夜、藍の熱狂的なファンに殺された五郎は、前世の記憶を持ったまま藍の息子、アクアマリン星野に生まれ変わる。アクアの二卵性双生児の星野ルビィも転生者であるが、彼女は五郎がアイに興味を持つきっかけとなった患者の一人であることを認めないままである。4年後、愛梨は同じ熱狂的なファンに殺害され、その後自殺した。しかしアクアは、そのファンが自分とルビーの父親を共犯にしたに違いないと考え、父親を探し出し殺すために俳優の世界に入る決意をする。

12年後、アクアは様々なプロダクションに所属し、自分のDNAと照合するためのサンプルを手に入れる。ある舞台で異母兄の上原大樹と出会い、大樹の両親が心中したことを知らされるが、両親が心中したのは愛が殺される前であることを知る。アクアの恋人の黒川茜は、双子の実の父親である神木光が生きていることを知るが、アクアは彼女を守るために縁を切る。一方、ルビーは、女優志望の有馬香奈とYoutuberのMem-Choを加え、アイのグループと同じ名前でアイドルグループを立ち上げる。ルビィはMVの撮影でゴローの遺体を発見し、ゴローとアイを殺したのは自分の父親であることを確認する謎の子供に出会う。復讐に燃えるルビィはアイドル活動に没頭し、ソロとグループの両方で活躍するが、アクア、カナ、メンチョーとは疎遠になる。そんな中、カナは有名監督との交際に成功するが、監督を自宅マンションまで尾行する姿をタブロイド紙に撮られ、愛人であるかのような記事を書かれそうになる。それを阻止するため、アクアは自分とルビーがアイの子供であることを漏らし、双子の関係を壊してしまう。
Gynecologist Gorou Amemiya is tasked with helping deliver the children of Ai Hoshino, a Japanese idol whom he admires, without the knowledge of the general public. However, the night of Ai's delivery, Gorou is murdered by an obsessive fan of Ai's, and is reincarnated as Aquamarine "Aqua" Hoshino, Ai's son, retaining his memories of his previous life. Aqua's fraternal twin, Ruby Hoshino, is also a reincarnation, though she refuses to admit her original identity as one of Gorou's patients who got him interested in Ai in the first place. Four years later, Ai is murdered by the same obsessive fan, who later commits suicide. However, Aqua pieces together that the fan must have had his and Ruby's father as an accomplice and thus resolves to enter the acting world to find and kill his father.

Twelve years later, Aqua joins various productions to get DNA samples to test against his own. He eventually meets his half-brother, Uehara Taiki, during a stage production, who tells Aqua that Taiki's parents committed a double suicide, but Aqua learns that their suicide happened before Ai's murder. Aqua's girlfriend, Akane Kurokawa, finds that the twins' actual father—Hikaru Kamiki—is alive, but Aqua cuts ties in an effort to protect her. Meanwhile, Ruby starts an idol group under the same name as Ai's original group, joined by aspiring actress Kana Arima and Youtuber Mem-Cho. On an out-of-town MV shooting, Ruby finds Gorou's corpse and runs into a mysterious child who confirms that her father was responsible for both Gorou and Ai's murders. Fueled by revenge, Ruby throws herself into her idol career, propelling both her solo and idol group's careers, though it ostracizes her from Aqua, Kana, and Mem-Cho. Desperate to prove herself, Kana successfully establishes inroads with a famous director, but a tabloid captures her following the director back to his apartment and prepares to write an article suggesting that she is his mistress. To prevent this, Aqua leaks his and Ruby's identity as Ai's children, fracturing the twins' relationship