Spike Chunsoft has released a new information batch for Zanki Zero: Last Beginning at the latest Weekly Famitsu magazine, confirming the voice actor allocations as well as, more importantly, the game’s full release date in Japan. This survival RPG game will be released there on July 5.
Here is the list of the eight main characters in Zanki Zero, along with their respective Japanese voice actors:

Haruto Higurashi – Toshiyuki Toyonaga
Ryo Mikajime – Toshihiko Seki
Zen Kubota – Mitsuki Saiga
Mamoru Ichiyo – Masaya Matsukaze (Child), Hiroaki Hirata (Adult)
Rinko Susukino – Haruka Yoshimura
Yuma Mashiro – Ayana Taketatsu
Minamo Setouchi – Ricca Tachibana
Sachika Hirasaka – Aina Suzuki
As for the two TV characters, they will be voiced by the following veteran voice actors:

Sho Terashima – Ryusei Nakao
Mirai – Masako Nozawa

The eight main characters are all clone humans that age rapidly in 13 days. They quickly grow old and die within that lifespan. When they die from any causes, they can be revived by spending exploration scores on an Extend Machine. As the character gets revived, they will grow stronger resistance related to their last death cause. Here are some examples of that:

When they got killed by wild animals, they will receive less damage from them.
When they died from overcarrying items, their carriage limit will be increased.
When they died in their Adult phase, their lifespan in that phase will ...