Yorito Morimiya prefers to be by himself instead of with friends. One night, while taking pictures, he meets a mysterious girl named Matsuri Shihou.

Takeshi calls Matsuri a calamity of the night and attacks. Yorito protects her and return to his home. There, she sees a painting of the blue sky.

It has been one week since Matsuri moved in with Yorito. Mana begins to get suspicious and visits Yorito.

Koyori is being discharged from the hospital and has difficulty telling Aono that she will be leaving.

On a cloudy day, Yorito and Matsuri decide to go out. After returning home, Takeshi appears and attacks!

After being introduced to Aono, Matsuri learns of her secret.