Tsukimi is Kukuru's classmate and has been her friend since elementary school. She is a signboard girl who helps her mother's set meal restaurant "Kame," and her friends like to gather at her shop. Her nickname is "Udon-chan." She has a nice and easygoing personality, but she also takes good care of others and is loved by everyone.

Aquatope of White Sand
Kukuru Misakino is an 18-year-old high school student who works in a small aquarium in Okinawa, and she knows about the "secret" of the aquarium: sometimes you can see mysterious things. One day Kukuru meets Fuuka, standing in front of a water tank with flowing hair and a tear rolling down her cheek. Fuuka has given up on her dream of becoming an idol and she has run away from Tokyo to Okinawa. Wanting to find a place to belong, Fuuka earnestly asks to work at the aquarium. The anime follows Kukuru and Fuuka as they deal with the issues of the secret of the aquarium and a looming crisis of its possible closure [ANN]