is a Japanese manga series written by Aira Yao and illustrated by Umashi. It began serialization on Shueisha's Tonari no Young Jump website and the Nico Nico Seiga website under Shueisha's Isekai Young Jump brand in December 2023.
The series focuses on an unnamed slime who has inhabited the corpse of Jelly Aspic, a saint. The slime took over Jelly's body without any prior knowledge of who Jelly was, and when she later learns of Jelly's reputation as a cruel wicked woman, she tries to avoid getting killed.
Written by Aira Yao and illustrated by Umashi, Slime Saint began serialization on Shueisha's Tonari no Young Jump website and the Nico Nico Seiga website under Shueisha's Isekai Young Jump brand on December 12, 2023. Its chapters have been compiled into six tankà Âbon volumes as of February 2026.
In December 2025, Seven Seas Entertainment announced that they had licensed the manga for English publication, with the first volume set to be released in November 2026.
In commemoration of the first volume's release on July 18, 2024, a promotional video was uploaded to the Weekly Young Jump YouTube channel that same day. It featured voice acting from Sora Amamiya, Kaito Ishikawa, Mutsuki Iwanaka, Ai Kakuma and Nozomi Furuki.
The series topped Niconico's 1st Manga General Election in the "Isekai Comic" Category in 2024.