Mizumachi Natsu has an inspirational constitution. But her idiosyncraticity isn't the only thing, and for some reason she's strangely liked by animals. But no matter how many ghosts you see or how much animals like you, that's not a big deal. Her most special power is that she can always talk with animals, Shiki the dog, Ruri the cat, Kuroha the crow, and in human language ...! ??