At first glance, Hiroyuki might come off as lazy and sarcastic. But even though he may roll his eyes and complain when someone has a problem, he will always step up and help them solve it. Underneath it all, he really is a nice guy.
He and Akari are close friends who have seen each other every day since they were little. However, he seems to have forgotten many of the little childhood memories that Akari treasures.