Mei Kurose 25 years old. Same age as the protagonist and a childhood friend. Lives nearby. Both he and the protagonist have moved to the city. They work at the same workplace. A charming man, a bit of a tsundere.

(18 years old) High school girl. Best friends with Koyuki since they were little. A friend of the protagonist despite the age gap. Became friends at a bookstore. Energetic, sharp-witted, and outgoing.

(18 years old) High school girl. Best friends with Koharu since they were little. A friend of the protagonist despite the age gap. Became friends at a bookstore. Calm, slightly oblivious, and outgoing.