She is the protagonist’s childhood friend, and until a year ago, they attended the same school in a small town.
When the protagonist moved away, their relationship turned into a long-distance one, though they hadn’t been officially dating before that.
In fact, it was the separation that spurred them both to take the initiative, and they finally became a couple.
Perhaps because she grew up in the countryside, she is innocent and demure. She is a girl who is completely devoted to the protagonist.
She gives her all to everything, and that includes sex as well. Although she’s shy, she’s willing to try all sorts of things.
After they were separated, they kept in touch constantly by phone and email, but during summer vacation, she comes to Tokyo all by herself because she wants to see him.
[From
Getchu]