It’s almost surprising that this didn’t get put into production earlier to ride on the coattails of a similarly named series but here we are; the I’ve Been Killing Slimes for 300 Years and Maxed Out My Level light novels is slated for an anime adaptation. It was announced in the fall of 2019 and confirmed that the CD cast would be reprising their roles. Now, the official site has updated with the second promotional video and confirming an April 10th, 2021 debut for the project. Check out some new visuals released via Twitter below as well.
The Japanese cast includes:
- Sayaka Senbongi as Falfa
- Kaede Hondo as Raika
- Aoi Yūki as Azusa
- Sayaka Harada as Harukara
- Minami Tanaka as Sharusha
- Manami Numakura as Beelzebub
- Azumi Waki as Fratorte
- Riho Sugiyama as Rosary
The light novels come from writer Kisetsu Morita and illustrator Benio which began in 2016 and there are ten volumes out as of the announcement in October 2019. A manga adaptation began in 2015 with Shiba handling it. Yen Press is releasing the novels in English.
Plot Concept: After living a painful life as an office worker, Azusa ended her short life by dying from overworking. So when she found herself reincarnated as an undying, unaging witch in a new world, she vows to spend her days stress free and as pleasantly as possible. She ekes out a living by hunting down the easiest targets – the slimes! But after centuries of doing this simple job, she’s ended up with insane powers…how will she maintain her low key life now?!
— 『スライム倒して300年、知らないうちにレベルMAXになってました』公式 (@slime300_PR) January 31, 2021
— GA文庫公式 (@GA_bunko) January 31, 2021