Chapter 1

Mother and Child (母と子) is the first 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 23, 2020, and in Mangaplus on April 20, 2022.

Flashforward
A pair of young boy and girl called Aqua and Ruby are featured in a television show.

Summary
Have you wondered what it would have been like if you were the child of a celebrity?

Hoshino Ai is a 16 year old idol with beautiful features, and the ace of an idol group called B-Komachi. Gaining explosive popularity in the show biz world within 4 years of her debut, she is the star that shines the brightest in the eyes of her fans. One of those fans is Gorou, a gynecologist, who adores Ai.

One day, Gorou finds out that his beloved idol is taking a break due to health issues. But when a pregnant Ai shows up in his hospital, the flabbergasted Gorou makes up his mind to support his her. Promising her a healthy delivery, they spend the coming months up to her delivery getting to know each other. Little did he know, a stroll at one unfortunate night would spell the end of his promise as an encounter with a mysterious figure leaves him in an eternal slumber.

But as fate would have it, the wish that one of his deceased patients once made, ends up coming true as he opens his eyes in the body of a newborn in the arms of none other than Ai.

Characters

 * Aquamarine Hoshino
 * Ai Hoshino
 * Gorou
 * Ruby Hoshino
 * Sarina
 * Ichigo Saitou

Trivia

 * This is the longest chapter in the manga by page count (41 pages).
 * This is the only chapter that has its chapter name revealed on the last page.
 * This is also one of three chapters that has their chapter name displayed on the panel directly, instead of being displayed inside a little star.