Mecha, Iron Wings, and Time

This is a love story between a poker-faced, tsundere DG and a little uke who tries very hard to save money. The story, in brief: Far, far in the future, there is a little uke who gets together with his DG. Then he begins the arduous task of saving money to feed his DG... Half a year ago, I had a dream about XD, and I combined it with elements I love, such as mecha, psychics, card makers, mecha designers, and so on, to write this story. It's pseudo-science fiction, with a fairly common mecha-and-card setup mixed with my own ideas. A lot of things may not have a sound theoretical basis, so please just accept them. Unless you find a plot hole or contradiction, I hope you won't nitpick. If possible, I'd like to try writing something... melodramatic? P.S.: 1. As always, there's no angst and it has a happy ending. No need to doubt that. 2. As always, it's a one-on-one romance. There may be multiple couples, but please don't say anything about it being a harem. 3. It's a brotherly romance, with an older seme. 4. If you have any issues with the story, I hope we can discuss them calmly. Please don't get worked up. 5. Hope you enjoy reading~ Theme: