Takeshi is a high school freshman at the CLAMP School High School Division, part of homeroom Z. He practices kendo and won the championship his freshman year. He was asked to be one of the Duklyon Defenders after winning the championship along with Kentaro.

Takeshi is has a more serious personality and is quick to anger over the mistakes and antics of Kentaro. He comes from a poor family and works in order to earn money. When asked, he is quick to deny having any relationship with Kentaro.