After Defecting, I Personally Dismantled My Sister's Cockpit

[Mecha]+[Depressed]+[Darkness]+[Abuser]+[Brother and Sister] War? It was just distant noise in the news. In this art academy surrounded by ginkgo trees, the first thing 19-year-old Serra does when she wakes up every day is to send a message to her brother Astor—— "Have peace today too." Aster is the youngest ace pilot in the Federation. Every time he comes home from vacation, he will take a whole box of honey nut cakes and sit in front of Sera's workbench. While watching her assemble mechanical insects, he laughs that her "hands are faster than her brain". "When your graduation exhibition is over, I will apply to be transferred to the rear base and accompany you to eat the cakes of the old cafe next to the college until it closes." Sera nodded and secretly stuffed the latest mechanical beetle into his pocket: "Then this will be your amulet. It can fly, which means I can fly to you at any time." On the day of farewell, Sierra stood at the entrance of the college, standing on tiptoes to help him adjust the collar of his military uniform, with red eyes but stubbornly refusing to shed tears. Astor ruffled her ponytail, smiled like he did when he was a child and said, "Silly girl, wait until I come back." He turned around and walked into the hover car. A second before the door closed, Sierra waved to him, her voice as soft as cotton candy: "Brother, we agreed that we would watch my graduation exhibition together!" The car started, and the ginkgo leaves swirled in the wind and fell, like a golden farewell rain.