Ran is the oldest brother, he's a sleepy individual who'd stay in bed as much as he could. He likes Mont Blanc and to be the center of attention. He'll always take care of his brother.
Rindou is the younger brother, his dream is to own the most popular club in Japan. He likes to play as a DJ. 

After this trauma, their relationship starts to break. Ran tries desperately to get Rindou to trust him again while he feels guilty for not being able to protect him. Rin is constantly in fight response.