When his father re-married, Kazuichi was a timid boy who was easily bullied by his younger stepsister Yami. Through hard work, Kazuichi has become a handsome young man who's the president of the Archery Club and admired by everyone. All in an effort to impress Yami as a reliable older brother, or as something more?

Natsushiro Seiichi, a first year high school student who is living a smooth sailing high school life. However, his everyday life changes after he encounters a popular beauty, Miho, in the first school year!!