[6][3] Summer Ghost was released in Japanese theaters on November 12, 2021 by its distributor Avex Pictures.

[7] In North America, GKIDS screened the film in Japanese and English language formats in 2022.

The limited edition version includes the original soundtrack, an 80-minute documentary of the film's production, animatics, and a special booklet.

Factory released the film in North America on November 1, 2022, on Blu-ray and digital platforms.

[4] A manga adaptation by Yoshi Inomi was serialized in Shueisha's Tonari no Young Jump [ja] website from October 8, 2021,[3] to June 3, 2022.