Astronauts and Astronauts: Comet updated the website for Tou no Shita no Exercitus with the cast names for the entire list of characters. So be sure to have a look at the official character pages, surely there must be some to your liking.
(Most of the names are written in Katakana without official romanizations)
- Chloe Audiard: Mami Yahiro (vndb)
- Aegis Von Orforbis: Ren Haruna (vndb)
- Shiro Avurora: Ichigo Momoi (vndb)
- Izumo Asakura: Sana Mitou (vndb)
- Shannon Fittsa: Urara Haruno (vndb)
- Rico Thera: Haru Aoi (vndb)
- Katoria Strauss: Himari (vndb)
- Fran Strauss: Minami Momoya (vndb)
- Luana Seraphis: Maya Suzuya (vndb)
- Clarissa Rust: Rino Kawashima (vndb)
- Teto Preshana: Konami Oonami (vndb)
- Marianu: Ryouko Tezuka (vndb)
- Elphis: Mei Misonoo (vndb)
- Regina Fittsa: An Kasuga (vndb)
- Maid: Mao Enokizu (vndb)
It’s currently unsure which ones of these will be designated as “Heroines” but currently the CG samples feature 5 different characters (Up to Shannon in the list above). The latest update to the website actually added 3 new ones to the list of samples, so be sure to check them out (nsfw).
Tou no Shita no Exercitus
Tou no Shita no Exercitus is set for a release in August and is being advertised as a “Fantasy RPG in a different universe”, but so far there hasn’t been much information on what kind of system it’ll be implementing.