Because I Don't Like My Big Brother At-All--!!
Plot
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.
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Cast
Eri Kitamura
Nao Takanashi (voice)
Kazusa Aranami
Mayuka Kondou (voice)
Toshiyuki Toyonaga
Shuusuke Takanashi (voice)
Sayaka Ohara
Nanaka Takanashi (voice)
Hideki Ogihara
Shuuji Takanashi (voice)
Ryoko Shiraishi
Hirono Kusuhara (voice)
Shinnosuke Tachibana
Keiichiro Kishikawa (voice)
Eriko Nakamura
Haruka Katou (voice)
Mitsuhiro Ichiki
Daigo Kurozaki (voice)