The production team for the OSHI NO KO anime series has revealed a new key visual featuring Ruby, Kana, and MEM-cho, shortly after the release of the ninth episode. The visual commemorates the anime’s “First Concert” story arc. The series first premiered with a 90-minute episode on April 12, 2023.

Two insert song videos from OSHI NO KO have also been posted on the anime’s official YouTube channel.
The first is a loop of Kana’s “Piiman Taiso” (or Green Pepper exercise) video that was shown briefly in the anime.
The second video is a short music video of the insert song “Full moon…!” which is performed by Megumi Han as her character, Kana Arima.
The anime is based on the manga series written by Aka Akasaka and illustrated by Mengo Yokoyari. It was first serialized in Shueisha’s Weekly Young Jump on April 23, 2020 and has released 11 tankoubon volumes as of March 2023. A 12th volume will be released on July 19, 2023. Yen Press releases the manga in English.
Daisuke Hiramaki (Selection Project, Asteroid in Love) is directing the anime, with Jin Tanaka (Love Live! Nijigasaki High School Idol Club, Laid-Back Camp) as series screenwriter, Chao Nekotomi (Love Is Like a Cocktail director [as Saori Tachibana], Shikimori’s Not Just A Cutie opening director and storyboard artist) as assistant director, Kanna Hirayama (Rent-A-Girlfriend) as chief character designer, and Shun Sawai (Shikimori’s Not Just A Cutie co-main animator) as sub-character designer. Doga Kobo is handling the animation production for the series.
Meanwhile, the voice cast members include Rie Takahashi as Ai, Takeo Ootsuka as Aqua, Yurie Igoma as Ruby, Kento Itou as Goro, Tomoyo Takayanagi as Sarina, and Yumi Uchiyama as young Aqua.

HIDIVE is streaming OSHI NO KO outside of Japan and describes the synopsis as:
When a pregnant young starlet appears in Gorou Amemiya’s countryside medical clinic, the doctor takes it upon himself to safely (and secretly) deliver Ai Hoshino’s child so she can make a scandal-free return to the stage. But no good deed goes unpunished, and on the eve of her delivery, he finds himself slain at the hands of Ai’s deluded stalker — and subsequently reborn as Ai’s child, Aquamarine Hoshino! The glitz and glamor of showbiz hide the dark underbelly of the entertainment industry, threatening to dull the shine of his favorite star. Can he help his new mother rise to the top of the charts? And what will he do when unthinkable disaster strikes?