Perhaps most well known for his childhood role as Manabu on the Japanese television series Saikon Icchokusen!, Kato is also recognized for his recurring roles on Saito San (as Makoto); Ninkyo Herupa (as Ryota Hatori); and 11 Nin Mo Iru! (as Sanada Saigo).
At the age of two, he appeared in three episodes of the television series Manhattan Love Story.
A voiceover artist as well as a live action performer, he contributed to the Japanese-dubbed versions of the American movies Happy Feet (2006) and Where the Wild Things Are (2009).
He was born and raised in Japan's Kanagawa Prefecture.
He and Satoshi Tsumabuki were both in the cast of the 2009 television series Heart of a Samurai (Japanese title: Tenchijin).