I'm not in a position to play your older brother, but I think this is a fantastic hook for good RP.
Miah Polaali and I made Miah and my old character C'kayah cousins. Over time other Polaali's came around as family, and it really added a fantastic dynamic to things. Miah and C'kayah fought like cats and dogs, but at the same time they were family, so they always retained that bond.
Setoh's a loner, though he's currently working for a Keeper clan in the Shroud. While he was there, they found a stray teenage Keeper living in their shed, and the girl somehow decided that Setoh would be her big brother. It's a fun dynamic.
Miah Polaali and I made Miah and my old character C'kayah cousins. Over time other Polaali's came around as family, and it really added a fantastic dynamic to things. Miah and C'kayah fought like cats and dogs, but at the same time they were family, so they always retained that bond.
Setoh's a loner, though he's currently working for a Keeper clan in the Shroud. While he was there, they found a stray teenage Keeper living in their shed, and the girl somehow decided that Setoh would be her big brother. It's a fun dynamic.