5 years ago, the elder brother of Yuna, Kazu, he went to New York to study music, but has returned to Japan temporarily. Living under the same roof again, after all this time they were no longer seem far as to when they were small. But their true feelings are revealed when Kazu wrote his first song of love for Yuna ...

Saera has just been transferred to a boarding school for girls only. Since she entered in the middle of the course, she felt a little alone until Kurumi made friends with her. Kurumi is a friendly and cheerful girl, and soon their friendship began, she fell in love with Kurumi. However, Kurumi is in love with Maria, a ballet dancer who is also in love with someone else ...