The official Twitter of the Tenchi Muyou! GXP: Paradise Shidou-hen original video anime revealed the main cast, staff, and a key visual (pictured).

Cast
Yamada Seina: Hirofumi Nojima (Kingdom 2nd Season)
Tsukiko Masaki: Satsuki Yukino (Bleach)
Miki Steinbeck: Rie Tanaka (Choujigen Game Neptune The Animation)
Kirsche: Megumi Toyoguchi (IS: Infinite Stratos)
Saki: Chie Nakamura (Naruto)
D: Ai Uchikawa (Dual! Parallel Lun-Lun Monogatari)
Jovia Jarvis: Ryouka Yuzuki (Kill la Kill)
Tenchi Masaki: Masami Kikuchi (Tenchi Muyou! Ryououki)
Washuu Hakubi: Yuko Kobayashi (One Piece)
Seto Kamiki Jurai: Yukari Nozawa (Kanojo, Okarishimasu)
Mikami Kuramitsu: Youko Soumi (Fullmetal Alchemist: Brotherhood)

Staff
Chief Director: Hiroshi Negishi (Tenchi Muyou!)
Director: Takashi Asami (Lupin III: Part 6 episode director)
Character Design: Nana Hiiragi
Chief Animation Director: Tomoyuki Abe (Kimi wa Kanata)
Color Design: Takuya Kawami (Naruto)
Art Director: Shinji Katahira (Kabukichou Sherlock), Izumi Wada (Goblin Slayer background art)
3DCG Director: Junya Satou (xxxHOLiC: Kei)
Director of Photography: Yutaka Nagaushi (B-gata H-kei)
Editing: Masaki Utsunomiya (Tsugumomo)
Sound Director: Yasunori Honda (Tenchi Muyou! Ryououki 2nd Season)
Studio: AIC, Saber Project
Production Cooperation: Digital Network Animation

Note: EXNOA's animation label KINEMATICS, which was previously credited as the studio, has since been removed from the project.

Masaki Kajishima, the original creator, is supervising and drawing the original character designs. Screenwriter Hideki Shirane (Dungeon ni Deai wo Motomeru no wa Machigatteiru Darou ka) is once again credited for the script and series composition. EXNOA is in charge of production alongside Digital Network Animation.

Kajishima launched the Tenchi Muyou! franchise in 1992, which has inspired four spin-off television anime and multiple movie, manga, and light novel adaptations. The original video animation series spanned for 20 episodes over three seasons.

The Tenchi Muyou! GXP spin-off, produced by animation studio AIC, aired in 26 episodes from Spring to Fall in 2002. Funimation licensed the anime in North America and released it on eighth DVD volumes in 2004, with boxsets in 2006, 2007, 2010, and 2012.

Source: PR Times