Maki is a shy person who is not good at talking with Hoshino, an unfriendly woman working at the dentists' front desk. Even though Maki forms many thoughts in her mind, she cannot speak those aloud.

One day, Maki had an opportunity to talk to Hoshino, and she slowly started to like her. When her cavity treatment is complete, she would no longer be seeing Hoshino. Where will Maki's romance lead her...?

(Source: Yuri Hub, edited)