Taiki Kawakami's manga adaptation of That Time I Got Reincarnated as a Slime is set to conclude with its 32nd compiled volume, scheduled for release on June 9. The final volume will feature a special edition that includes a full-color version of the manga's 133rd chapter, "The Daemon's Whispers."

Kawakami began serializing the manga in Kodansha's Monthly Shonen Sirius magazine in March 2015. The manga's 31st volume was released earlier this year on February 9. This manga adaptation has served as the primary basis for the franchise's extensive anime productions.

Kodansha USA Publishing handles the English release of the manga, with the 29th volume having been released on March 31. The original light novel series by Fuse and Mitz Vah concluded in November 2025 with its 23rd volume, and a new side-story series is slated for release starting in 2026.