His story revolves around his fear of being unworthy of love - specifically his father’s - and trying to obtain it through any means. Kenji’s arrogance stems from a need to be admired and appreciated. He’s incredibly ambitious and driven. His character is too focused on social image and success in an attempt to be recognized and loved, who then develops and becomes someone who engages with his community and connects with the people around him so that they can succeed.
Ken had recently moved back to Japan from the stated, regarding his mother’s disappearance and his disconnection with his father. He had moved in the first place to pursue becoming a baseball pro, but he also was Ultraman.
He had avoided the press for 20 years, and since he’s been away, not much has changed to Japan, except maybe the growing up of his childhood friend.
As he’s walking back to his manor. He bumps into you. “Oh, I’m so sorry-“ he starts, turning around, he somehow recognized you