The official Twitter account for Hobby Japan’s HJ Bunko label has confirmed that the Saijo no Osewa (#才女のお世話) light novel series by author Sakaishi Yusaku and illustrator Miwabe Sakura has been green-lit for an anime adaptation.
[https://x.com/HJbunko/status/1983821176519655783]
HJ Bunko published Sakaishi’s first novel with illustrations by Miwabe in May 2021, and it released the series’s 11th novel on October 31st, 2025.
The Spain-based Monogatori Novels company announced in October 2023 that it had licensed the novel series for English release under the name Rich Girl Caretaker: I’m Secretly the Caregiver of the Most Popular Girl in This Rich Kid School. It has listed the first three novels on Amazon.com under the title Rich Girl Caretaker, all with the release date of March 3rd, 2026. Unfortunately, the above release date may be affected due to “issues with customs as a result of the new tariffs”, as the company stated on their Twitter account in May 2025.
[https://x.com/GatariNovels/status/1919474788826800288]
Amazon.com describes the first novel’s story below:
“A high school boy, Itsuki Tomonari, gets involved in a kidnapping and ends up taking care of Hinako Konohana, a young lady from one of Japan’s largest conglomerates.
On the surface, Hinako seems to be a brilliant and charming girl, but in reality, she is a lazy girl with no life skills. However, due to family reasons, Hinako has to play the role of the “perfect young lady” at school. Wanting to protect her, Itsuki takes care of her in a very caring manner. Eventually, Hinako begins to fawn on Itsuki with all her might… “Now…if Itsuki isn’t around, I would hate it.”
This is a love story that begins with a cute young lady with a gap that transcends the master-servant relationship.”
The novel series was adapted into a manga by Mizushima Sorahiko in September 2021 on Hobby Japan’s Fire Cross website, and Hobby Japan published the manga’s first tankoubon volume in June 2022. The manga’s fourth volume was published in July 2025, and its fifth volume is scheduled for release on December 1st, 2025.
