I finally thought up of a good Pokémon story. Well, more like collection, but whatever. Anyways, just as a fair warning, I'm going to be using the Japanese names for everyone, so you've been warned!
1) Admiration
When he grew up, he wanted to be like his brother. A nice, caring trainer that wouldn't mind helping an injured Pokémon.
That was the kind of person his brother was. And not just with his creatures, but with the youngest too. They only had each other, after all.
That's why Shinji took great pride in watching Reiji do practically everything. From grooming the Pokémon to making their food. It was all he could do to learn, since he was a bit too young to handle his brother's creatures.
"Do you think I'll ever be as good as you?" Shinji asked as his brother was getting out a few dishes from the cabinet.
Reiji smiled at this. "Only if you try."