Yu Miyazaki

ある大学生・雅也のもとに届いた一通の手紙。それは世間を震撼させた稀代の連続殺人鬼・榛村からだった。「罪は認めるが、最後の事件は冤罪だ。犯人が他にいることを証明してほしい」。過去に地元のパン屋で店主をしていた頃には信頼を寄せていた榛村の願いを聞き入れ、事件を独自に調べ始めた雅也。しかし、そこには想像を超える残酷な事件の真相があった―。

In a seaside town where very little happens, middle school students Keisuke Isobe and Koume Satou live a rather dull life. But when Koume's crush breaks her heart, their situation becomes quite unordinary. She starts a "no-strings-attached" relationship with Keisuke, whom she had previously rejected, both finding solace in the other in order to fill the emotional voids in their lives. However, being "friends with benefits" becomes complicated when real feelings begin to develop, as the consequences of their relationship start to take their toll on those around them and themselves. A Girl on the Shore takes a harsh look at love, relationships, and the emotional price that will be paid as the result of a decision made between two teenagers.

監督の川北ゆめきにとって初の長編映画となる本作では、平凡さを嫌う自分勝手で変わり者な器械体操部の“ボク”こと山南くんと、普通に生きる同じ部活のまなみちゃんの愛と青春の10年間が描かれる。