Shiosai no Serenade

Spring-- The coastland town was bathed in the roar of the nearby sea.
Narahara Kyousuke waited for her on the train platform.
Her name was Yamakami Sakura. Kyousuke's childhood friend.
She'd been away for many years, but returned now to attend high school.
It was the first time home in five years.
Spring-- Kyousuke and Sakura's new friendship begins.

[from DLsite English]