Yuichi grew up without a pack, and after his mother died he was left alone in the deciduous forest. Shiki later found him and took him into his pack.
Yuichi is very fast and agile, which landed him a job as a chaser for the pack. However, his impulsiveness can sometimes lead him to act too soon and delay the hunt. Luckily, Chan Ming is always there to hold him back whenever he goes too far. He leads the chasers whenever the hunting party gathers.
He does not have any close friends, but he is respected by other members for his work.