Chapter 123

Bad Move (悪手) is the one-hundred twenty-third chapter of Oshi no Ko manga series. It is written by Aka Akasaka and illustrated by Mengo Yokoyari.

Summary
With the knowledge of each others' past lives, Ruby is drowned in tears and asks Aqua why he has never said anything, to which he responds that he only found out recently. Ruby explains she used the name B-Komachi in the hopes that he would find her. She was worried that he had forgotten all about it but then found out he had gone missing and turned out to be dead.

Aqua apologizes for making her worry and that everything he has done was to avenge Ai. Speaking of revenge, Ruby says she feels sick for all the lies she made and the terrible things she has done. Aqua tells her that lying doesn't suit her, that she and Ai are different, and that she should live her own life instead of trying to follow in Ai's footsteps. Ruby admits that she thought she had to lie and be like Ai and asks if Aqua will be OK with such a version of her. Aqua then reminds her that he is still her biggest fan.

Elsewhere, Tsukuyomi comments that Ruby is now back on her feet and the movie can be made according to plan, but it is still a bad move by Aqua. Ruby goes and cleans herself up, her faith in her brother restored. She then remembers a promise he made that he would marry her when she turned 16.

Characters

 * Ruby Hoshino
 * Aqua Hoshino
 * Gorou Amamiya (flashback)
 * Ai Hoshino (pictured)
 * Tetsu Urushibara (flashback)
 * Meiya (flashback)
 * Sarina Tendouji (flashback)
 * Tsukuyomi