"Earthbound Spirit Boy Hanako-kun") is a Japanese manga series written by Iro and illustrated by Aida, which results in their conjoined name 'AidaIro'.

[20] A spin-off manga series titled Hōkago Shōnen Hanako-kun launched online on February 22, 2018.

[22] An anime television series adaptation was announced in the April issue of Monthly GFantasy magazine on March 18, 2019.

[23][24] It is animated by Studio Hibari's subsidiary Lerche and directed by Masaomi Andō, with Yasuhiro Nakanishi handling series composition, Mayuka Itou designing the characters, and Hiroshi Takaki composing the music.

[13] Funimation licensed the series for a SimulDub,[29] which following Sony's acquisition of the namesake platform thereafter, it was moved to Crunchyroll.

[31][32] In August 2023, a short anime television series adaptation of After-School Hanako-kun was announced, and is labeled as the "first installment" of the project.

It is produced by Lerche and directed by Masaki Kitamura, with scripts written by Kazuma Nagatomo, character designs handled by Aya Higami, who also served as chief animation director, and music composed by Hiroshi Takaki.

[b] Akari Kitō, Yu-ri Yoshida, Chitose Morinaga, and Mai Kanazawa performed the ending theme song "Koi!

[37][38] It was also revealed that a second season of the original anime had been greenlit,[39] which premiered on January 12, 2025, on all JNN affiliates, including TBS.

[46] In a review of the anime series for NEO, Jones Alex praised the series and characters for being engaging, as well as the unique visuals, comparing Hanako-kun to a comic book brought to life, utilizing thick outlines, vibrant colors and distinct character proportions.

[47] In 2024, the series' first box set published by Yen Press was nominated for the Eisner Awards in the "Best Publication Design" category.