Cast of Ecchi OVA Aki-Sora Changed

According to Akitashoten, the voice cast of OVA "Aki-Sora" was changed. The reason for the change was not announced. The OVA is about incest taboo between a brother and a sister and will be released on December 18th.

New cast (previously announced cast)
Aki: Kawaragi Shiho (Kitamura Eri)
Sora: Kinoshita Sayaka (Imai Asami)
Nami: Ueda Kana
Kana: Okajima Tae

Source: Akitashoten