This entire series is based on Jeff Williams' song "All Our Days" from RWBY Vol. 2 Soundtrack. It's a heartwarming song, and as I listened to it, I realized that it could work out for Rex and Speed. So, these are small drabbles/one-shots that focus on a specific verse from the song. They'll be in order of the lyrics, so they should follow one after the other seamlessly. I'd suggest listening to the song so you get an idea on what each chapter is about.
Please enjoy!
Rex Racer was a gifted young boy; his parents knew this even before he could speak. He was smarter than kids his age, and that made him more mature than the others. As a Racer child, his passion became race cars and racing. He would be out in the garage all day with his dad, watching him fix and build cars. He was even allowed to help out from time to time, although his dad did the main work and would just let his son help out on the smaller work.
His interaction with other kids was very limited. The boys in the neighborhood didn't want to hang out with Rex because of how different he was from all of them. They found his grown-up attitude to be strange, and so they never included him in their activities. At first, Rex was fine with them out casting him because he enjoyed working alongside his dad better.
However, by the time he turned seven, he realized how lonely he was. Spending time with his dad was fun, sure, but it wasn't the same as having a friend who he could talk to and play with. When he wasn't in the garage or doing homework, he'd sometimes watch the neighborhood kids playing in the street, and it made him feel lonely. He would sometimes approach them, asking if he could play, but they just ignored him. Eventually, he stopped approaching them and instead turned his attention to his imagination, where Rex was never alone. His imagination spurred a wish he wanted above everything else.
Rex wanted a friend, but above all that, he wanted a sibling.
Rex was an only child, and while that was fine and all since he got his parents undivided attention, it still made him feel very alone. He wanted a little brother (or sister; he wasn't picky) who would play games with him, and who wouldn't leave him alone. He would do the same for his little sibling; he'd always be there for them, and he'd never let them feel alone in the world. He already imagined what they'd do.
They'd play games for hours on end; they'd have so much fun playing games that Mom would have to break up their playtime. They'd watch movies and shows that they would laugh about. Rex would teach his sibling everything there was to know about racing; from building and maintaining a car and all of his techniques. His imaginations made him yearn for a sibling even more.
So every night, Rex made a wish to the stars in the sky, hoping for his dreams to become a reality.