Head to head
Kimetsu no Yaiba vs Mermaid Forest
Side by side on community score, how it's rated, audience size and how long each takes to watch. Data from Kitsu, refreshed daily.
The short version
- Kimetsu no Yaiba is rated higher by the community: 8.62 vs 6.89.
- Kimetsu no Yaiba is more widely watched, with 146× the members.
- Mermaid Forest is the quicker watch, 9h 51m shorter.
- Fans favorite Kimetsu no Yaiba more often (1.0% vs 0.3% of members).
- They share Fantasy.
| Kimetsu no Yaiba | Mermaid Forest | |
|---|---|---|
| Community score | 8.62higher | 6.89 |
| Rank by score | #21better | #6,398 |
| Members | 403,774more | 2,774 |
| Favorited by | 1.0%more | 0.3% |
| Time to watch | 10h 15m | 24mshorter |
| Episodes | 26 | 13 |
| Format | TV Series | TV Series |
| Aired | 2019 | 2003 |
| Status | Finished | Finished |
| Studio | ufotable | – |
| Age rating | R | R |
How each is rated
Share of ratings at each star level · 9★–10★: 68% vs 12%
- Kimetsu no Yaiba
- Mermaid Forest
0%40%80%
1★2★3★4★5★6★7★8★9★10★
Show as table
| Kimetsu no Yaiba | Mermaid Forest | |
|---|---|---|
| 1★ | 3% | 1% |
| 2★ | 0% | 1% |
| 3★ | 0% | 1% |
| 4★ | 4% | 8% |
| 5★ | 1% | 9% |
| 6★ | 1% | 17% |
| 7★ | 17% | 30% |
| 8★ | 6% | 21% |
| 9★ | 7% | 5% |
| 10★ | 60% | 7% |
Time to watch
Episodes × episode length, openings included
Show as table
| Item | Runtime |
|---|---|
| Kimetsu no Yaiba | 10h 15m |
| Mermaid Forest | 24m |
Only Kimetsu no Yaiba
Shared genres
More comparisons
Kimetsu no Yaiba vs Attack on TitanKimetsu no Yaiba vs Fullmetal Alchemist: BrotherhoodKimetsu no Yaiba vs Hunter x Hunter (2011)Kimetsu no Yaiba vs Nanatsu no TaizaiMermaid Forest vs Attack on TitanMermaid Forest vs Fullmetal Alchemist: BrotherhoodMermaid Forest vs Nanatsu no TaizaiMermaid Forest vs Attack on Titan Season 2
Kimetsu no Yaiba vs Mermaid Forest FAQ
Is Kimetsu no Yaiba better than Mermaid Forest?
By community score, Kimetsu no Yaiba is ahead (8.62 vs 6.89). Both are fantasy, so taste decides the rest.
Which is longer, Kimetsu no Yaiba or Mermaid Forest?
Kimetsu no Yaiba is longer: 10h 15m against 24m.
Which is more popular?
Kimetsu no Yaiba has more members on Kitsu (403,774 vs 2,774).
If I liked Kimetsu no Yaiba, will I like Mermaid Forest?
Probably, if it was the fantasy side you enjoyed.

