The official website for the previously announced Tenchi Muyou! Ryououki 4th Season OVA series has revealed additional cast members as well as a new key visual (pictured right). In addition to the cast, the website also revealed new character designs for the cast members.

Cast
Funaho Masaki Jurai: Rei Sakuma (Top wo Nerae! Gunbuster)
Tennyo Masaki: Emi Shinohara (Bishoujo Senshi Sailor Moon)
Airi Masaki: Sakiko Tamagawa (Taiho Shichau zo)
Ringo Tatsuki: Rui Tanabe (Ryuugajou Nanana no Maizoukin (TV))
Otoka Masaki: Azusa Satou (PriPara)
Tsukiko Masaki: Satsuki Yukino (Higurashi no Naku Koro ni)
Fuuka Masaki: Miya Amamiya
Mizune Masaki: Risa Yuzuki
Tokimi: Yumi Touma (Aa! Megami-sama!)
Azaka: Kenichi Ogata (Rockman Hoshi ni Negai wo)
Mikami Kuramitsu: Yoko Soumi (Kodomo no Jikan: Ni Gakki)

Tenchi Muyou! Ryououki 4th Season will be the fourth installment in the Tenchi Muyou! OVA series, with 20 episodes previously released between 1992 and 2000. The Tenchi Muyou! franchise has since its first iteration received four spin-off TV series and various movie adaptations, as well as manga and light novel adaptations. The OVA series has since 2008 been licensed in North America by FUNimation Entertainment, after the previous licensor, Pioneer Entertainment, closed its business unit in 2007.

Source: Official site