The energy stored in the helmet also powers a vision enhancement enchantment. My back piece had a mana exhaust on it that I used for jumping and remaining airborne during emergency descent. My fiancée Brigadier Olivier Armstrong requested a winter version of this for her boys in Briggs. Back when she was still alive. Thinking back only a few cities survived. My hometown, Briggs was one of them partly through her effort and mine as well. We loved that town beyond all reason. My mind went to her reaction to my change of station. I had known Oliver all my life and she only cried twice. Once on my proposal and then when I was stationed in Central. I gave all remaining cities some type of fortification that was instrumental in its survival. Or so the Fuhrer told me when he gave me my massive promotion and forced me to leave my betrothed who would later die in the final battle for Briggs. I look in the reflective surface of the windshield which I’m happy that mom designed to not be viewable from the outside and gave my blue and golds one final inspection.

So much references to full metal didn't know this was a crossover story

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It just ended up that way. At first I wanted it to have elements from it and then it just evolved on its own. I couldn't tell his story proper without going going into depth. This is an isekai after all. If that were an option instead of crossover, I would have selected it. Imagine Terra as a sci-fi fantasy version of the world of fullmetal. Also thank you for your comment. I appreciate all constructive comments such as your, they help me make the story better