Volume 4

Volume 4 is the fourth volume of the Oshi no Ko manga, written by Aka Akasaka and illustrated by Mengo Yokoyari. It was released in Japan on May 19, 2021, and it will be released in English on November 21, 2023.

Summary
Siblings Ruby and Aqua are acclimating to the entertainment industry. Aqua debuts in a romance reality show and pairs up with Akane Kurokawa! Once the show is over, what kind of relationship will Aqua have with their colleague!? Meanwhile, Ruby's idol group is gearing up for their first stage appearance!

Chapters

 * Chapter 31: LoveNow
 * Chapter 32: The Proper Age
 * Chapter 33: Motivation
 * Chapter 34: Center
 * Chapter 35: Sense of Responsibility
 * Chapter 36: The Night Before
 * Chapter 37: Pressure
 * Chapter 38: Not Picking a Favorite
 * Chapter 39: A Slightly Enjoyable Job
 * Chapter 40: Competitive

Trivia

 * The quotes from the Volume summary are taken from the first chapter, said by the narrator.