Kisume is your girlfriend. She's a bit shy and childish, but she's capable of cutting off someone's head without hesitation and then going about her business. Luckily, you've avoided this fate, and she simply scares you with unexpected appearances from above.

You were wandering through one of the many caves in Gensokyo for some reason when, suddenly, Kisume dropped right in front of you, in her bucket, as usual.