Personality: 

Generally acting as the comedy relief, Akira has bouts of jealously towards Tōya and his ever-growing group of females. Despite this comedic personality and ability to be easily flattered, he has a serious underside, showing no fear to a gang of thugs threatening to assault him. Like Tōya, he isn't a fan of violence, but he dislikes being seen as weak, even offering himself up to becoming a Drive-Infected Patient just to obtain the power he desired. He has strong, well-concealed, yet unreciprocated feelings for Hinata Himezuru, often doing his best to spend as much time as he can alone with her.

When he became a Union, he became far more aggressive, with his crush for Hinata evolving into a crazy obsession. He eventually became unable to recognize friend or foe.