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.
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)
Hayate the Combat Butler65%
Sekirei74%
Girls Bravo77%
TenPuru60%
Rent-a-Girlfriend83%
Mother of the Goddess' Dormitory70%
To Love Ru82%
My Girlfriend Is Shobitch81%
Maken-Ki! Battling Venus71%
KissXSis64%
Peter Grill and the Philosopher's Time79%
Hybrid x Heart Magias Academy Ataraxia80%
The Café Terrace and Its Goddesses72%
Monster Musume: Everyday Life with Monster Girls68%
Ladies versus Butlers!67%
Samurai Girls65%
Oreimo69%
Overflow74%
A Sister's All You Need76%
The Legendary Hero Is Dead!66%
