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?!

[From Yen Press]

Original run:: 2017-01-12 – present
Latest release:: 2025-06-14
Publication status:: ongoing

Titles

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

Slime Taoshite 300 Nen, Shiranai Uchi ni Level Max ni Nattemashita

I've Been Killing Slimes for 300 Years and Maxed Out My Level

Diệt Slime Suốt 300 Năm, Tôi Level Max Lúc Nào Chẳng Hay

genres

comedy fantasy slice of life

Links

Website Bookwalker MyAnimeList Wikidata

Related series

spin-off:

I Was a Bottom-Tier Bureaucrat for 1,500 Years, and the Demon King Made Me a Minister

Staff

Japanese

English

Publishers

Japanese

SB Creative publisher, GA Novel imprint

English

Yen Press publisher, Yen On imprint, Yen Audio imprint

Books in series

I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 1

I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 2

I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 3

I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 4

I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 5

I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 6

I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 7

I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 8

I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 9

#10

I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 10

#11

I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 11

#12

I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 12

#13

I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 13

#14

I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 14

#15

I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 15

#16

I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 16

#17

I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 17

#18

Slime Taoshite 300 Nen, Shiranai Uchi ni Level Max ni Nattemashita 18

#19

Slime Taoshite 300 Nen, Shiranai Uchi ni Level Max ni Nattemashita 19

#20

Slime Taoshite 300 Nen, Shiranai Uchi ni Level Max ni Nattemashita 20

#21

Slime Taoshite 300 Nen, Shiranai Uchi ni Level Max ni Nattemashita 21

#22

Slime Taoshite 300 Nen, Shiranai Uchi ni Level Max ni Nattemashita 22

#23

Slime Taoshite 300 Nen, Shiranai Uchi ni Level Max ni Nattemashita 23

#24

Slime Taoshite 300 Nen, Shiranai Uchi ni Level Max ni Nattemashita 24

#25

Slime Taoshite 300 Nen, Shiranai Uchi ni Level Max ni Nattemashita 25

#26

Slime Taoshite 300 Nen, Shiranai Uchi ni Level Max ni Nattemashita 26

#27

Slime Taoshite 300 Nen, Shiranai Uchi ni Level Max ni Nattemashita 27

#28

Slime Taoshite 300 Nen, Shiranai Uchi ni Level Max ni Nattemashita 28