Mecha Warrior in the Immortal Realm

Earth Federation ace Gavin Lynn's Skyreach Mech crashes in Azuretide Realm, unleashing a Demon Lord and the Upper Realm Demon God Jules Caine. Allied with Zoey Wong's Azure Cloud Sect, he fights back using his Nano Armor and a tech-created Supreme Heavenly Spirit Root. Can he save this world and find the Portal home?