Omega looks on with indifference as humanity faces ruin. The KSCT and the NDF fully mobilize the knowledge and technology gained from their experiences so far, but Zomera's rapid evolution shows no sign of stopping... Kosei swears to protect something important that Sorato left behind! Bearing the resolve and pride cultivated with his irreplaceable friends, Kosei swears to Sayuki and Ayumu that he will return alive, and rushes into a desperate battle, staking everything on one final battle!