I've been killing slimes for 300 years and maxed out my level, Vol. 1
Kisetsu Morita
I've been killing slimes for 300 years and maxed out my level, Vol. 1
Age Rating, Reading Level & Content Guide
by Kisetsu Morita
The text is written at a 6th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content is intense and may include graphic or distressing scenes.
We may earn a commission from these links. Bookshop.org supports independent bookstores with every purchase.
About This Book
The soft pop of slimes bursting fills the air, a strange but oddly satisfying sound that’s become Azusa’s daily rhythm. She's lived for centuries, quietly hunting these gooey creatures to keep life peaceful and simple. But with each slime defeated, her powers grow — and her calm life might be about to change in surprising ways.
Themes
Quick Assessment
This fantasy story follows Azusa, a witch who reincarnates into a new world and spends centuries living a relaxed life by defeating slimes. While the book contains themes of interpersonal relationships and includes elements of fantasy violence, it also references mature topics such as murder and criminal investigation. Due to content warnings about rape and other intense themes, this book is more appropriate for older readers within the target middle-grade age range and parental guidance is recommended.
Why we rated I've been killing slimes for 300 years and maxed out my level, Vol. 1 11IS
I've been killing slimes for 300 years and maxed out my level, Vol. 1 is written at a Level 6 reading level across 298 pages. Strong independent readers around grade 7.0 can typically handle this book on their own; with parent or teacher support, I've been killing slimes for 300 years and maxed out my level, Vol. 1 works for readers up to grade 8.0.
We rate I've been killing slimes for 300 years and maxed out my level, Vol. 1 as 11IS ("Intense — Social") because the content sits in the "Intense" range — intense conflict including peril, frightening scenes, or emotionally heavy themes. The strongest signals come from emotional weight, physical peril, social complexity, thematic difficulty — these are the dimensions parents should evaluate against their reader's tolerance.
Specific content flags noted by reviewers: Murder, Criminal investigation, Rape.
Thematically, I've been killing slimes for 300 years and maxed out my level, Vol. 1 explores interpersonal relations, future life, fantasy world-building, and adventure — these threads give the book room to mean different things to different readers.
Good fit for
- ✓ Children in the Ages 9-12 range — the maturity and attention span match the story's pacing.
- ✓ Patient readers who enjoy slower, character-driven stories.
- ✓ Kids drawn to stories about interpersonal relations, future life, fantasy world-building.
Maybe not for
- ! Sensitive readers who get overwhelmed by intense conflict or scary scenes.
- ! Children younger than 9-12 — the content intensity is above what most younger kids can process comfortably.
- ! Reluctant readers who need a fast hook — the pacing here rewards patience.
For Parents
Content Intensity
11IS — Intense — SocialHeavy themes explored in depth. War, death, abuse addressed directly.
Content Flags
Was our "Intense" content intensity rating accurate for this book?
Reading Insights
Hook Factor
2/10A steady, thoughtful read that rewards patient readers.
Discussion Potential
1/10A lighter read — great for independent enjoyment.
Book DNA
Multi-dimensional content fingerprint
Similar Books
Based on content and theme analysis
The Slime Volcano
H. Badger
The Slime Volcano
H. Badger
Slime Lake
Tom B. Stone
Slime Lake
Tom B. Stone
Slime Squad vs the Supernatural Squid
Steve Cole
Slime Squad vs the Supernatural Squid
Steve Cole
The slime attack
Anita Yasuda
The slime attack
Anita Yasuda
Konosuba
暁なつめ
Konosuba
暁なつめ
Goblin slayer
蝸牛くも
Goblin slayer
蝸牛くも
Details
Book Length
- ISBN
- 9780316448277
- Pages
- 298
- Publisher
- Yen On
- Published
- 2018
- Type
- Fiction