See In AO

The main character, Kei-kun, arrives in a coastal town and enters the Andrewdschool. He plans to spend several years here.

One day, he saves a girl named Mia, who falls in love with him at first sight. However, she is hesitant to admit her feelings and turns to her twin sister Yumi for help.

While trying to help Yumi sort out her feelings, Mia herself is confronted with the intricacies of her emotions.