Ookura Miyako

Miyako is the protagonist's childhood friend and also neighbor. She is generally a cheerful, straightforward, and impatient person. She helps the protagonist with a lot of things, including waking him up in the morning, bringing him monthly allowance, and giving him information about other girls in Kirameki high school. Miyako always carries with her a bunny doll that she and the protagonist made when they were young.

Edited from Wikipedia.