|Manga Debut||Chapter 8|
|Anime Debut||Episode 4|
Yasuda is a Class B karuta player. He has been in Class B for 3 years, and was one of the strongest competitors. He was also Chihaya's biggest competition that she had to face in order to become a Class A player. He and Chihaya kept exchanging the Chihaya card back and forth. But, he lost to Chihaya in the end.