Onibi
Atelier Sento
Onibi
Age Rating, Reading Level & Content Guide
diary of a Yokai ghost hunter
by Atelier Sento
The text is written at a 4th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content is mild with minimal sensitive material.
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About This Book
The camera clicks, and suddenly, the invisible world bursts into view! Forests shimmer with mysterious spirits, temples hide mischievous ghosts, and every shadow could hold a secret. What will happen when the next Yokai steps out from the shadows?
Themes
Quick Assessment
Onibi is a middle-grade graphic novel blending fantasy and travelogue as two visitors explore Japan's culture through encounters with Yokai—supernatural spirits from Japanese folklore. Suitable for ages 9-12, it offers engaging visuals and introduces cultural heritage with light supernatural themes, including some mild peril from mischievous and dangerous spirits. Fans of manga and comic-style storytelling will appreciate its mix of adventure and cultural education.
Why we rated Onibi 9LP
Onibi is written at a Level 4-5 reading level across 115 pages. Strong independent readers around grade 5.5 can typically handle this book on their own; with parent or teacher support, Onibi works for readers up to grade 6.5.
We rate Onibi as 9LP ("Light — Physical") because the content sits in the "Mild" range — mild conflict — the kind a child encounters in normal play and sibling life. Across our four dimensions (emotional, physical, social, thematic) the book reads as evenly mild; no single dimension stands out as a concern.
Specific content flags noted by reviewers: Mild Peril, Fantasy Violence.
Thematically, Onibi explores ghosts, adventure, comic books, and multicultural — 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 ghosts, adventure, comic books.
- ✓ Curious kids who prefer real-world topics over made-up stories.
Maybe not for
- ! Children who are sensitive to violence, even when handled at age-appropriate levels.
- ! Reluctant readers who need a fast hook — the pacing here rewards patience.
For Parents
Content Intensity
9LP — Light — PhysicalLight conflict or tension. Mild peril resolved quickly.
Content Flags
Was our "Mild" content intensity rating accurate for this book?
Reading Insights
Hook Factor
2/10A steady, thoughtful read that rewards patient readers.
Discussion Potential
2/10A lighter read — great for independent enjoyment.
Book DNA
Multi-dimensional content fingerprint
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Details
Book Length
- ISBN
- 9784805314968
- Pages
- 115
- Publisher
- Tuttle Publishing
- Published
- 2018
- Type
- Nonfiction