A planet designed to strip you down to animal instinct. Thor doesn't survive here, he has to become something that does. The show commits to that premise from episode one, which means every alliance fractures, every moral line moves, and every moment of trust costs something irreversible. The 11-episode runtime means it never slows down to explain itself; you're thrown into the same confusion as Thor, figuring out the rules while they're already killing you. Studio BONES animates desperation like few shows can, but the pacing occasionally rushes past ideas that deserved to breathe. Watch this if you want survival fiction that refuses to let anyone stay the person they were before.

After their parents are murdered, eleven-year-old twins Thor and Rai Klein are sent away by masked men and wake up on Chimaera, a terraformed prison planet where carnivorous plants hold the upper hand. With only a beam knife and a foul-smelling satchel, they set out looking for other people. The few humans there are split into four factions called Rings, and a young man named Zagi tells the brothers that only the Jyu Oh Sei, the one who conquers all four Rings, may leave. On this world only the strong last, and survival means becoming a beast. Determined to get home and learn the truth about his parents' deaths, Thor commits to enduring Chimaera, but he soon finds the planet hides more than it first appears and is pulled into the politics of the Rings. The result is a sci-fi action drama built on survival and mystery.