Yukari Yakumo (八雲　紫 Yakumo Yukari) is a legendary youkai who is able to manipulate boundaries. She is the master of Ran Yakumo. She is called the "gap youkai" (すきま妖怪 sukima youkai),[2] although "gap youkai" is not the name of a species, as she is more of a one-of-a-kind type of youkai.[3] Regardless of her power, Yukari appears to be the most well-informed being in Gensokyo of any kind and usually achieves her goals through manipulating events rather than direct combat.