Volume 4

This is the fourth volume of the Oshi no Ko manga. It is written by Aka Akasaka and illustrated by Mengo Yokoyari. It was released in Japan on May 19, 2021.

Summary
"In the world of entertainment, lies are weapons."

Twin brothers and sisters, Aqua and Ruby, have finally started performing arts activities. Aqua, who appeared in the romance reality show, formed a "couple" with Akane Kurokawa! After the show, what will the relationship between the members be? Meanwhile, after a surprising addition, Ruby's idol career has finally begun! As she follows her mother's legacy, what would happen next?

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.