Onii-chan Dakedo Ai Sae Areba Kankeinai yo Ne (You're My Brother, But That Doesn't Matter as Long as we Have Love!), also known as "Oniai" is a light novel adaptation being produced by SILVER LINK (Baka and Test , Kokoro Connect) and directed by Kawaguchi Keiichiro (Mayo Chiki!, Nyan Koi!).
Oniai begins airing 2012/10/05 at 11:00 PM JST on AT-X.
Himenokoji Akiko and Himenokoji Akito are twins who have been reunited after being separated for six years. Akiko aggressively tries to pursue a relationship with her brother, but her affections are constantly being rejected and now she has competition to deal with as well.
Check out the other cuties on the official character page.
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The ED is Lifeる is LOVEる!! and will be performed by the 4 main gals. You can hear the song being played in the PVs above. Lifeる is LOVEる!! will be due for a 2012/10/31 release, but until then you can loop the PVs until you memorize the lyrics. The OP is SELF PRODUCER by Chihara Minori, and will be available 2012/10/24. Until then you can check it out below.
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Following screenies taken from the PVs that have been released.