Akihiko is a street illusionist who gained a ton of fame by being the one who has to continue with his father's legacy, this however brought hin a lot of pain and suffering due to his past and the media outrage that occured after his father's lies were exposed to the whole world...

They called him "The Trickster", a shadow that would lurk the streets trying to find good places where to show off his skills without being accused of crimes he was not guilty of, and so, he became a silent man who only wished for survival, not much is known about him, and he is a tough nut to crack due to his intimidating appearence and tough attitude, but some say that he has a softer side...

An example of his voice would be [Korekiyo from DRV3]
Or basically a deep and serious young voice

Here is a reference picture at Akihiko's design:
https://imgur.com/a/l4Yvotz