Kitsune-biyori (a Touhou LW original) refers to weather that goes back and forth between clear skies and rain. An apt temperament for Ran, as a shikigami youkai fox. Ran is endowed with Moon Essence, as an enchantress, and with Metal Phase, as a fox spirit. The cold and silent Metal Phase resists Earth Phase, because earth bears metal, but it is weak to Fire Phase, because fire refines metal. The cooperative and indecisive Moon Essence resists the alluring and arrogant Sun Essence, but it is weak to the diverse and uncooperative Moon Essence.

The ability of Ran Yakumo from the world with a never-ending winter. It is essentially the same as our version of Ran's ability. Ran Yakumo's role in this world does not seem to differ significantly from her role during the incident known as the "Spring Snow Incident." As a shikigami of Yukari Yakumo, she performs several tasks. Specifically, she is mainly in charge of managing the barrier on behalf of her master and guarding her master. Like her master, Yukari Yakumo, she is very mysterious. Although she is Yukari's servant, she seems to harbor tremendous power and should not be underestimated. According to the history of our world, the Spring Snow Incident was when the boundary separating the Netherworld from the world of the living―the Barrier of Life and Death became thin. Around the time of the incident, Yukari Yakumo herself mentioned that the northeast side of Hakurei's barrier was weakening, so these may be the same barrier areas. Ran was entrusted with the management of these barriers by Yukari, at least at the time of the incident. However, there are probably several other locations that are important points along a barrier that Yukari Yakumo takes particular care to maintain. It is likely that places located on a boundary, such as Hakurei Shrine and Kourindou, need to be constantly checked for the management and operation of Gensokyo. Yukari Yakumo herself frequently visits these spots. To further speculate, there is one place that absolutely must be kept under surveillance for the sake of harmony throughout Gensokyo. The Youkai Mountain. It is no coincidence that Chen, the shikigami of Ran Yakumo, who is Yukari Yakumo's shikigami, has a base of operations in Mayohiga, located on the Youkai Mountain. It is unclear what the gods and youkai who inhabit the Youkai Mountain think of Ran Yakumo. However, it wouldn't be surprising if Yukari Yakumo placed Ran on surveillance because she could keep watch by force if necessary. Youkai foxes have a long and storied history. There are many famous foxes and legends, including the god Inari, fox possession, kuda-gitsune, Dakiniten, Izuna Gongen, and Tamamo no Mae. In terms of religion, it is noteworthy that they are deeply related to Onmyoudou and Shugendou, as well as ancient Shinto and Buddhism. The de-facto rulers of the Youkai Mountain are the tengu, who are descendants of lost Shugendou gods (gods of calamity). These tengu have a deep magical relationship with foxes, which is evident in the relationship between a certain Great Tengu and a kuda-gitsune. Also, Yukari Yakumo uses Zenki and Goki, who were disciples of En no Ozunu, the founder of Shugendou. She uses them as shikigami, a technique from Onmyoudou, and has ordered them to protect Ran... This could be seen as a power play by Yukari Yakumo to keep the tengu in check since Zenki is said to be both an oni and a tengu. On the other hand, the fact that Yukari and Ran can use Onmyoudou techniques despite being youkai can be taken as a power play against humans. The onmyouji of the Heian period protected humans from the threat of youkai transformation. Onmyouji, along with Heian-era Minamoto warriors, were specialists in the extermination of youkai, and the most famous greater youkai exterminated by onmyouji was Tamamo no Mae, the incarnation of a nine-tailed fox. The clan that claimed Inari as its ancestral deity was the Hata clan, which speaks of the ancient Hata clan's deep relationship with rice cultivation. Come to think of it, wasn't there a secret god among the sages of Gensokyo who uses the surname of Hata...?