Because I Don't Like My Big Brother at All! poster

Because I Don't Like My Big Brother at All! (2011)

Animation · Comedy · Romance

Nao Takanashi loves her brother Shūsuke despite the incest taboo. Nao thinks that Shūsuke is her blood relative, but in fact she is an adopted daughter, whose parents have died. After Nao learns the fact, she wants to fall in love normally with Shūsuke because siblings by adoption can marry under the family law in Japan. However, she finds herself competing with Shūsuke's childhood friend, Iroha Tsuchiura, and his class president and yaoi lover, Mayuka Kondō.

IMDb rating: 5.7 (157 votes)
Episode average: 7.2 +1.5 vs IMDb
Seasons: 1
Language: JA
Type: Mini-series

Rating trend: this show's seasons do not settle into one shape. Rising Shows ranks whole shows by the shape of their rating trend rather than one average score, which is how you find a show that got better rather than a show that started well.

Browse shows by rating shape → Open in Rising Shows app → View on IMDb

Ratings refreshed Oct 3, 2026 · 1 season indexed

Cast

Seasons

Season 1 (2011)

7.17 avg 9 episodes 6.1 → 7.4 24 min avg

Season 1 episodes - IMDb ratings
#	Title	Rating	Votes
1	Ani to Imouto no Yokoshima na Nichijou	6.1	12
2	Tsuinteru, Kyodai o Shugeki	6.9	10
3	Raibaru Shutsugen! Kyodai Daipinchi!	7.1	10
4	Imoto ga Mizugi ni Kigaetara	7.3	8
5	Misuta Ekkusu Ani Shu	7.5	8
6	Ani wa Kuro Pansuto no Yume o Miru	7.3	8
7	Anitachi no Akiba	7.5	8
8	Ani no Toppu o Nerae!	7.4	7
12	Oniichan no Koto Nanka Zenzen Suki Janain Dakara ne-!!	7.4	18