is a Japanese manga series written and illustrated by Sakana Sakatsuki. It was originally published as a one-shot on Pie International's Pie Comic Art website in November 2020. It later began serialization on the same website in July 2021.
Synopsis The series is set in a universe filled with "slumbering planets", whose people are in a deep sleep due to the effect of poison from the Tree of Tobias. 303 works as a star tripper with Planetarium Ghost Travel, whose goal is to preserve the cultures of these planets.
Characters 303
505
Media Manga Written and illustrated by Sakana Sakatsuki, Hoshitabi Shōnen was originally published as a one-shot on Pie International's Pie Comic Art website on November 20, 2020. It later began serialization on the website on July 9, 2021. Its chapters have been compiled into six wideban volumes as of January 2026.
Other In commemoration of the release of the second volume on September 22, 2022, a voice comic adaptation was released thirteen days prior. The voice comic featured performances from Soma Saito, Yuma Uchida, and Yoshino Aoyama.
Reception The series was nominated for the eighth Next Manga Awards in 2022 in the web category. The series was ranked 40th in Da Vincis Book of the Year ranking in 2022. The series was ranked fifth in the 2023 edition of Takarajimasha's Kono Manga ga Sugoi! guidebook list of the best manga for female readers. The series was also ranked seventeenth in Freestyle magazine's "The Best Manga" 2023 edition. The series won the Grand Prize in the Manga Division at the 54th Japan Cartoonists Association Award.
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