The plot within the Oshi no Ko manga series are officially divided into story arcs by the author. An arc ends after a manga chapter announced the beginning of a new arc. Consequently, an arc begins the following chapter after said announcement is made. The exception is made for Prologue: Childhood arc due to it being the first arc of the series.
Episode 1: Mother and Children (Mother and Children - Mother and Children)
Show Business[]
Show Business
Show Business「芸能界, Geinō-kai?」 is the second arc of Oshi no Ko manga series. It span the entire second volume of the manga and tells the story of the twins entering high school and becoming teenagers, and slowly working themselves into the showbiz/entertainment world for their own personal reason. It introduces a producer with ties to Ai, Masaya Kaburagi, fellow actor Melt Narushima, mangaka of Sweet Today, Yoriko Kichijouji, and freshmen friends of Ruby, Frill Shiranui and Minami Kotobuki.
Episode 5: Reality Dating Show (恋愛リアリティショー - Renai Riariti Sho)
Dating Reality Show[]
Dating Reality Show
Dating Reality Show「恋愛リアリティショー, Ren'ai Riariti Shō?」 is the third arc of Oshi no Ko manga series. It span the entire third volume and first two chapters of the fourth volume of the manga and tells the story of Aqua entering the reality TV show We're About to Fall in Love for Real (also known as LoveforReal) in order to gain information regarding Ai from the producer Kaburagi. It introduces fellow co-stars of the show such as actress Akane Kurokawa, Youtuber Mem-Cho, fashion model Yuki Sumi, dancer Nobuyuki Kumano, and band member Kengo Morimoto. It also introduces Youtuber affiliated with Strawberry Productions, Pieyon.
The First Concert「ファーストステージ, Fāsutosutēji?」 is the fourth arc of Oshi no Ko manga series. It spans the rest of the fourth volume, and covers the induction of Mem-Cho into the newly revived B-Komachi idol group, which was Ai Hoshino's previous idol group, and their appearance in the Japan Idol Festival. It also introduces an event management company representative Sumiaki Raida as a prelude to the next arc, alongside a one-off appearance of an idol who quits two weeks after the festival, Mana Suzushiro.
Private「プライベート, Puraibēto?」 is the sixth arc of Oshi no Ko manga series. It spans the rest of the seventh volume and eighth volume of the manga. It covers the shocking revelation that Aqua has found regarding the mystery of his father, along with covering for the music video shooting of B-Komachi's new song in Miyazaki, the birthplace of Aqua and Ruby along with the place where both of their previous lives, Gorou and Sarina, ended. It introduces composer for the original B-Komachi group Himura, instagrammer/video creator Anemone Monemone, an unnamed man that presumably fathered Aqua and Ruby, and an unnamed girl that seems to be connected to the reincarnation of Gorou and Sarina.
Mainstay「中堅, Chūken?」 is the seventh arc of Oshi no Ko manga series. It spans the ninth and tenth volume of the manga. It covers Ruby Hoshino as she began making her way on the entertainment world through featuring at a web variety show that Aqua is starring, and later on, follows Aqua as he discover the hidden secrets of both his sister, and the continuing mystery of their father. It introduces the assistant director on the variety show "Dig Deep! One Chance"Shun Yoshizumi, his cosplayer/VTuber sister Mimi Yoshizumi, a cosplayer Meiya, the director of the variety show Tetsu Urushibara, and reveals the father of Ruby and Aqua as Hikaru Kamiki.
Scandal「スキャンダル, Sukyandaru?」 is the eighth[note 1] arc of Oshi no Ko manga series. It spans the first eight chapters of the eleventh volume of the manga, and it covers the potential scandal involving Kana Arima after a sordid picture of her with an up and coming movie director are taken by a paparazzi, and the drastic measure taken to alleviate the problem by Aqua Hoshino. It introduces the newly famous director Masanori Shima.
Movie「映画, Eiga?」 is the ninth arc of Oshi no Ko manga series. It covers the production of the documentary movie The 15 Year Lie, including the fundraising and casting of the characters involved, the auditioning for the role of Ai Hoshino, which ended up being played by Ruby Hoshino, and the filming of said movie. It introduces famous actress Yura Katayose and the first formal appearance of Hikaru Kamiki. It also introduces an agent for an advertising company for the movie, and late Sarina Tendouji's mother, Marina Tendouji, along with revealing a stage name for the mysterious girl connected to reincarnation as Tsukuyomi, and introduces a former member of B-Komachi with close ties to Ai and Hikaru, Fuyuko Niino.
The End of the Play「終劇によせて, Tsui Geki Ni Yosete?」 is the tenth arc of Oshi no Ko manga series. It's a wrap for The 15 Year Lie and following a heart-to-heart, Akane Kurokawa pushes Kana Arima to confess her feelings for Aqua Hoshino. Meanwhile, Aqua Hoshino deliberate on himself and the things that happened during the movie filming, as the movie is released to the general public.
