I don't know why, but I really liked completing Shinya's confidant. At first, I thought it was going to be a confidant about some bratty kid, one that I wouldn't be interested in. But it turned out to become one of my favorites in the game. To me, it really delved into why bullies become bullies; though the reasoning is different for every bully, one thing that is the same about them is that they want to win. And Shinya was a person that was pressured to obtain victory for so long by his mother, so it's no surprise that he became a bully towards his peers. It was Akira that was able to make him understand his actions and to change them. Through him, Shinya discovered that winning isn't always everything; sometimes, people have to lose.
All in all, it was just really sweet and heart-warming to me. I really enjoyed seeing that brotherly bond between Akira and Shinya; they interact with each other so well.