BUR #757 is pending approval.
category yuki_onna -> general
rename yuki_onna -> yuki-onna_(mythology)
deprecate yuki_onna
create implication yuki-onna_the_absolute_zero_mayakashi -> yuki-onna_the_ice_mayakashi
The tag Yuki onna is for a type of Japanese yokai, so therefore it shouldn't be treated as a specific character tag, especially when there are a decent amount of characters who are Yuki-onna (like Letty Whiterock). So I suggest the tag should re reclassified and renamed accordingly to the proper romanization (with dash instead of space).
Also I figured that the tag for YGO's Yuki-onna monster should be implied to the base variant too since it's missing atm.