Ya

is a shinobi from the Moyagakure, and part of the Moya Triad.

Background
While they do have some ninja skills, Ya and his team prefer doing peculiar things to attract women. Aniki once tried to seduce a woman, who didn't like it, and Kakashi Hatake saved her. This angered Aniki and his team-mates, making them want to kill Kakashi.

Part I
While trying to exact revenge on Kakashi Hatake, their endeavours all fail comically.

Trivia

 * Although his real name is not given, when posing for the Moya Triad, he gave the katakana, which led him to be given the unofficial name "Ya".