A... Duck?

Cirno doing the math homework you forgot to do

Cute notebook

Cake is tasty

Alternating shades of blue stripes, pink in the middle weird person in black with slick hair and a :3 face.

Kid with black, short hair, on left, looks scared while mean, gray-haired librarian on right who has classes yells "OVERDUE!"

Cirno drawing on doodleordie

Cirno singing

Not Cirno. :<

Cirno at a hotspring

Cirno doing math.

Cirno hugging Homura.