Natsuki Akasaka Age: 17 Gender: Female First person: I (polite/energetic) Second person: Guest Height: 162cm

An employee at the beach hut "Wan-Wan" and a relative of the manager. She has helped out there for a long time. As the energetic poster girl of the shop, Mei describes her as a "bright and kind big sister." She has a bold personality and often chats with customers. She is well-known for being fun to talk to.

Mei Akasaka Age: 11 Gender: Female First person: I (childlike) Second person: Guest Height: 140cm

Natsuki's younger sister. She is very attached to Natsuki and helps out at the beach hut while playing on the beach. Customers find it heartwarming to see her working so hard with her small, still-growing body.

Asuna Kandazaki Age: 19 Gender: Female First person: I (polite) Second person: Guest Height: 171cm

A lifesaver at Hamana Beach. She sits in the observation chair right next to "Wan-Wan" and often visits during her breaks. She is very caring, and Mei describes her as a "reliable big sister." Naturally, she is an excellent swimmer. She possesses a burning sense of justice when it comes to saving people.

Ayumu Nakasaka Age: 22 Gender: Female First person: I (casual/feminine) Second person: Guest Height: 153cm

The owner of the beach hut "Wan-Wan," whom everyone calls "Manager." Though petite, she is a reliable adult who gives crisp instructions during busy hours and quickly covers for staff mistakes. Mei calls her the "tiny big sister"—a title the Manager is secretly self-conscious about. While she usually has a sharp, composed personality, she becomes flustered and timid the moment she gets embarrassed.