Based on Konpaku Youmu, stage 5 boss of Touhou 7. Wears a black ribbon over white hair, with no braids and a white chocolate filling. Often referred to as "Myon", a fandom nickname for the real Youmu's white, orbiting phantom half. Said phantom half occasionally accompanies the yukkuri.
Slightly rarer than other "common" yukkuri, Youmus are typically the warriors and protectors of clans. They are often much more well-disciplined than most yukkuri, and will seek a stick or other suitable object to wield as a "sword". Despite not having braids, they usually train themselves to wield their weapon of choice with their mouths, and can become surprisingly skilled fighters by yukkuri standards. They also serve as hunters, much like Marisa and Chen types.
Because of their self-discipline, Youmus are sometimes valued by public parks and other urban areas as peacekeepers and public workers, willing to cull wild shitheads in exchange for acceptance and the occasional payment by humans. They also make popular pets, and will commonly be protective of their owners and homes against intruding wild yukkuri.
Untrained Youmus are known to have particularly filthy mouths, often shouting "DIIIIICK~!" as a catchphrase. Some Youmus may go even further and communicate mostly by shouting random sexual obscenities, even when friendly and otherwise well-behaved.
Youmus are known to have an innate affection for Yuyukos, and will often serve and protect them instinctually, even when the Yuyuko in question teases or exasperates them.