A cute kitten is taken in by Shuu, a high school student, who names her Haru. Grateful to her new owner for taking her in and naming her, Haru decides to make a deal with the great cat god to allow her to acquire a human form and thus reward him... What she doesn't realize is that he is in love with a girl from his class, which complicates her initial plan and triggers the cat jealousy?!!! What can Haru do in the time she has left as a human? (Source: MU)