It was serialized on Shueisha's digital magazine Shōnen Jump+ from October 2017 to February 2021, with its chapters collected in thirteen tankōbon volumes.

Summer Time Rendering takes place in Hitogashima, a fictional island based on Tomogashima located in Kitan Strait in Wakayama Prefecture.

Following the death of his parents, Shinpei Ajiro grew up with the Kofune sisters, Ushio and Mio, before heading to Tokyo to live alone.

Assisted by Mio, Shinpei tries to find the answers to what really happened to Ushio and possibly save the residents from a strange dark enigma.

Written and illustrated by Yasuki Tanaka [ja], Summer Time Rendering, was serialized in Shueisha's digital magazine Shōnen Jump+ from October 23, 2017,[15] to February 1, 2021.

[24][25] A two-part spin-off, titled Summer Time Rendering 2026: The Room that Dreams of Murder (サマータイムレンダ2026 未然事故物件, Samā Taimu Renda 2026 Mizen Jikobukken), was published on Shōnen Jump+ on April 14–15, 2022.

[43] The game, produced by Scrap [ja], took place on the island of Tomogashima, which inspired the setting of Summer Time Rendering, for one day only on July 22, 2021.

[43] Kōhei Horikoshi, My Hero Academia's author and Tanaka's ex-assistant, made positive comments about the series.

[3] In a review of the first volume, Erica Friedman, writing for Anime News Network called the series a "can't-put-down kind of read", praising its art and story, adding as well that it has a "nice balance between the people, the setting, the action, and the horror."