Astra Lost in Space volume 3 features story and art by Kenta Shinohara.

After their nightmare on Shummoor, camp group B-5 arrives at the third planet on their journey, Aspirade. The planet has plenty of food, water and sunshine, making it a tropical paradise and the perfect place to relax. Even the lone wolf of the group, Ulgar, starts to open up! That is, until he suddenly pulls out a gun and threatens to kill Luca! Could Ulgar be the traitor the group has been desperately searching for?