Head to head
Ai Sky Tree 21 vs Boku no Hero Academia
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
- Boku no Hero Academia is rated higher by the community: 8.30 vs 5.95.
- Boku no Hero Academia is more widely watched, with 4377× the members.
- Fans favorite Boku no Hero Academia more often (1.0% vs 0.0% of members).
- They share Action.
| Ai Sky Tree 21 | Boku no Hero Academia | |
|---|---|---|
| Community score | 5.95 | 8.30higher |
| Rank by score | #12,048 | #106better |
| Members | 131 | 573,378more |
| Favorited by | 0.0% | 1.0%more |
| Time to watch | – | 5h 12m |
| Episodes | 1 | 13 |
| Format | ONA | TV Series |
| Aired | 2012 | 2016 |
| Status | Finished | Finished |
| Studio | – | BONES, Bones |
| Age rating | G | PG |
How each is rated
Share of ratings at each star level · 9★–10★: 3% vs 59%
- Ai Sky Tree 21
- Boku no Hero Academia
0%30%60%
1★2★3★4★5★6★7★8★9★10★
Show as table
| Ai Sky Tree 21 | Boku no Hero Academia | |
|---|---|---|
| 1★ | 10% | 3% |
| 2★ | 10% | 0% |
| 3★ | 10% | 0% |
| 4★ | 20% | 6% |
| 5★ | 16% | 1% |
| 6★ | 12% | 2% |
| 7★ | 19% | 21% |
| 8★ | 0% | 7% |
| 9★ | 0% | 6% |
| 10★ | 3% | 53% |
Only Ai Sky Tree 21
Shared genres
Only Boku no Hero Academia
More comparisons
Ai Sky Tree 21 vs Attack on TitanAi Sky Tree 21 vs Boku no Hero Academia 2Ai Sky Tree 21 vs One Punch ManAi Sky Tree 21 vs Boku no Hero Academia 3Boku no Hero Academia vs Attack on TitanBoku no Hero Academia vs One Punch ManBoku no Hero Academia vs Fullmetal Alchemist: BrotherhoodBoku no Hero Academia vs Hunter x Hunter (2011)
Ai Sky Tree 21 vs Boku no Hero Academia FAQ
Is Ai Sky Tree 21 better than Boku no Hero Academia?
By community score, Boku no Hero Academia is ahead (8.30 vs 5.95). Both are action, so taste decides the rest.
Which is longer, Ai Sky Tree 21 or Boku no Hero Academia?
Runtime data is incomplete for one of them.
Which is more popular?
Boku no Hero Academia has more members on Kitsu (573,378 vs 131).
If I liked Ai Sky Tree 21, will I like Boku no Hero Academia?
Probably, if it was the action side you enjoyed.

