Volume 9

Volume 9 is the ninth volume of the Oshi no Ko manga, written by Aka Akasaka and illustrated by Mengo Yokoyari. It was released in Japan on October 19, 2022.

Summary
"I knew it... Ruby has something special in her."

In Takachiho, the city of myths, where the music video was shot, Ruby Hoshino discovers the truth about the pair of men that is responsible for Ai's and Goro's death. Unable to forgive the fact that one of them is still alive and kicking, she vows to take the matter of revenge into her own hands and kill the surviving killer with her own hands. Half a year passed since then, and Mainstay has begun!

List of Chapters

 * Chapter 81: Progress
 * Chapter 82: B-Komachi Nights
 * Chapter 83: Fixation
 * Chapter 84: Pitching an Idea
 * Chapter 85: Calculation
 * Chapter 86: AD
 * Chapter 87: Lies
 * Chapter 88: Offer
 * Chapter 89: Cosplay
 * Chapter 90: Compliance

Trivia

 * The quotes from the Volume summary are taken from Chapter 81, said by Mem-Cho to herself as she saw the massive number of views for B-Komachi's newest music video.