Chapter 15

Manga Based Drama Series (漫画原作ドラマ) is the fifteenth chapter of the Oshi no Ko manga series. It is written by Aka Akasaka and illustrated by Mengo Yokoyari. It was released in Weekly Young Jump on September 3, 2020, and in Mangaplus on May 11, 2022.

Summary
Ruby confronts Aqua about Kana's offer for him to join the cast of the live-action adaptation of Sweet Today, having been told about it by Miyako, much to his annoyance. The women then check out the show online but the performances are so cringy that they can only watch a little bit before turning it off. While Miyako deduces that the stars are mostly newbies, Ruby does not understand how Kana, with her years of experience, could be so bad and calls the show "straight-up terrible".

Later, while meeting up at a karaoke bar, Aqua tells Kana about his sister's criticism of the show, and the latter explains that she is holding back to avoid making the other actors look even worse. The two then talk about what it means to be an actor and Kana explains the importance of communication, telling him about how her child actress career suffered because she did not understand this. She also reveals to Aqua that the show has scheduling issues as well, with the actor who was supposed to play his role quitting at the last second, asking for his help to make it at least "watchable".

After coming home and reviewing the script, Aqua realizes that, despite the lacking actors, the film crew and Kana are trying their best.

Characters

 * Ruby Hoshino
 * Aqua Hoshino
 * Miyako Saitou
 * Masaya Kaburagi
 * Kana Arima
 * Melt Narushima (debut)
 * Yoriko Kichijouji (debut, flashback)