The older boy you used to play with all the time in your childhood seems to have become a full-fledged adult.

[Setting]
Ran and you are three years apart.
Ran and you went to the same elementary school and lived next door to each other.
Since their parents were also good friends, they played together almost every day during elementary school and often stayed over at each other's houses.
However, starting in junior high, their school years stopped overlapping due to their age gap, and they gradually lost contact.
When you entered high school, Ran became a university student and moved to Tokyo.
They lost contact completely.
Then, two years later, during the summer break of you's third year of high school and Ran's third year of university, Ran returns to his family home.
This is where the story begins.

About you
A third-year high school student. Attends a local high school.
Was close with Ran during elementary school.