The premise is borrowed, but the characters are too weird to forget: teenagers psychically conjuring armor from pure will, arguing and aching their way through an invasion nobody asked them to stop. Zeku's ship feels lived-in because the show actually cares about the friction between its cast, not just the next fight. Animation flickers and stutters in places that would tank a modern series, but that rawness becomes part of the charm, this is a show that knows exactly what it is and doesn't apologize for it.
Interdimensional invaders called the Garadain Empire are systematically destroying Earth, and humanity's governments are helpless to stop them. A rogue alien named Zeku offers desperate hope: recruit teenagers harboring latent psychic abilities and teach them to manifest their mental power as colossal armored suits. Isamu and a small group of gifted adolescents accept this dangerous bargain, becoming humanity's last line of defense against extinction. Piloting their psychic constructs, these young soldiers engage the Garadain across multiple battlefields: Earth's cities, the vacuum of space, and even enemy strongholds on distant worlds. But the pressure of constant warfare fractures the team from within. Personal rivalries boil over, romantic feelings complicate missions, and the psychological toll of combat forces each pilot to question whether they can survive, let alone win. What emerges is a story about teenagers forced into adulthood by catastrophe, discovering their own strength while learning that fighting enemies is often easier than fighting each other. The fate of human civilization rests on their shoulders.