Binetsu Shōjo is about a girl named Rina, 15 years of age, who had a crush on a boy she usually sees in the train station every morning.

It was so unfortunate, however, that her mother picked that time to shout her name and wave the flute she forgot at home.

Embarrassed, she decided to hide from her mother and was saved by a boy with black hair, who turned out to be a friend of her crush!

Later, she received VIP tickets from her crush, with a name on it 'Hiro Usami' for a live band concert.

The crowd changed and Hiro jumped off the stage and carries Rina away to an undisclosed location.