Chapter 79

Duty (役目) is the seventy-ninth 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 April 28, 2022.

Summary
Ruby was able to get the keychain from Goro's corpse. She's standing there and thinking to herself when the crow girl appears to her and jokes about how she shouldn't be pillaging corpses. Ruby says she's in a bad mood and tells her to back off. Crow girl then tells Ruby about how Goro was the one who cared for Ai during her pregnancy, how he disappeared the night the twins were born and how a suspicious person was sighted near the hospital that day.

B-Komachi and the rest of the filming crew notice how distracted Ruby seems. Anemone gives an evaluation for each B-Komachi member. She thinks very highly of Kana as she has both the looks and the charisma to be the center of B-Komachi. She believes that Mem is capable of holding her own. Ruby on the other hand, is pretty much a picture perfect idol and yet she seems to have the problem of being rather unoriginal.

Later, Ruby's conversation goes on with the Crow girl. This girl reveals that there were two people involved in Goro's murder, one of whom was about the age of a university student and the other who was the age of a middle schooler at the time. Crow girl says it was one of these two who went on to kill Ai later. Ruby asks crow girl what happened to the other guy, to which crow girl teasingly says that it's Ruby's job to find out.

Ruby thinks to herself that the two most important people in her life were unfairly taken away from her. After a bit of soul searching, she gets stars in both of her eyes and swears revenge. Ruby seems to have gotten a sudden boost in charisma, something Anemone notices immediately.

Characters

 * Ruby Hoshino
 * Tsukuyomi
 * Anemone Monemone
 * Miyako Saitou
 * Kana Arima
 * Mem-Cho
 * Ryosuke Kaihara (flashback)
 * Ai Hoshino (flashback)
 * Gorou Amamiya (flashback)