"Sometimes you hurt the ones you love without ever realizing it."

Taizou and Ikuto, only one year apart, have been together since childhood. They went to the same kindergarten, the same middle school, and even the same high school. Despite being younger, it's thanks to Ikuto that Taizou managed to pass his college entrance exam, so that they could go to the same school together. However, in the year that they're apart, Ikuto drifts away and ends up going to a different school. Taizou, oblivious to Ikuto's feelings, chases after him to find out what happened.