Space Brothers Marathon Broadcasts All 99 Episodes and Prequel Film on ABEMA
The marathon gives viewers a complete run of the series and its prequel film just after the manga's conclusion, offering a rare chance to see the prequel story not covered in the original manga or anime.
Reporting from 1 source: Denfaminicogamer.
ABEMA will air all 99 TV episodes of Space Brothers and the prequel film Space Brothers #0 in a free marathon from July 17 to 21, 2026. The broadcast runs over five days with two daily blocks, and free streaming is available for one week after. The manga concluded in June 2026 after 18 and a half years.
The marathon begins July 17 at 9:00 a.m. and 9:00 p.m. with episodes 1 through 25. Each subsequent day covers the next 25 episodes: 26-50 on July 18, 51-75 on July 19, and 76-99 on July 20, with an additional midnight block on the 20th. The prequel film Space Brothers #0 airs on July 20 at 8:30 p.m. and 10:15 p.m., and again on July 21 at 11:30 a.m. The film depicts a story not found in the original manga or the TV series.
All 99 episodes and the film are free to stream for one week after broadcast. The manga by Chuya Koyama, serialized in Kodansha's Morning, ended in June 2026 after 18 and a half years, with cumulative circulation exceeding 35 million copies. The marathon arrives as a full retrospective of the Nanba brothers' journey to space.
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.