The 18th volume of the manga came out on 10 August.
The manga adaptation of the popular fantasy light novel series “I've Been Killing Slimes for 300 Years and Maxed Out My Level” is set to end with its 19th volume. The news was revealed in the series’ 18th volume, which came out on 10 August. No news about when Volume 19 will come out has been revealed yet.
I've Been Killing Slimes for 300 Years and Maxed Out My Level manga
Original author: Kisetsu Morita
Manga illustrator: Yusuke Shiba
Publisher: Square Enix
When is the I've Been Killing Slimes for 300 Years and Maxed Out My Level manga ending?
In the 18th compiled book volume of the manga, it was revealed that the 19th and next volume will be its last. The exact release date for Volume 19 is unknown.
The manga is based on Kisetsu Morita’s original light novel series of the same name, which first launched on the Shōsetsuka ni Narō website in 2016. SB Creative began publishing it in a book format with illustrations by Benio. The 30th and final volume of the light novels was released on 15 June, 2026. The novel series ranked 9th in the 2019 version of the Kono Light Novel ga Sugoi! guidebook.
Shiba’s manga adaptation began serialising on Square Enix's Gangan Online website in June 2017.
The light novel received an anime adaptation by Revoroot, which premiered in 2021. The second season by the animation studio Teddy aired in 2025. Crunchyroll streams both seasons of the anime.
Yen Press publishes both the light novels and the manga in English and describes the story as:
From corporate slave to a laid-back witch—reincarnation’s a pretty sweet deal! Or so Azusa believes until her maxed-out status comes to light...In this new manga adaptation of the original novel, enjoy the hilarity that ensues as Azusa attempts to evade all forms of adventure and regain her lazy life!