♂ m

Faceless protagonist. He is in a long-distance relationship with Youko, staying behind in Tokyo. He can't afford to visit her, so he tries to call her as much as possible and send her recorded messages via mail.

♂ m

Childhood friend of Youko in Hokkaido. He is a member of the school swimming club and had a crush on Youko since they were kids.

♀ f

Takashi's girlfriend, who had to move to Hokkaido to her grandmother. She is a shy and introverted girl, who loves to read books in the library.