|This article is about a/an actor in Kamen Rider Ex-Aid.|
Kai was recruited by Amuse Inc. during high school. However at the time, his principal had requested that he'd finish his high school studies first. In 2015 he graduated and went straight into the entertainment business, with Parado being his debut role.
Kai had played soccer since he was in the first grade, but stopped once he graduated from high school.