Fuuka chooses to work part-time at a seaside cottage the summer before college. He encounters the youngest son of the proprietors, Jun, who is constantly emoting, whether it be weeping or chortling, which causes trouble. Despite this, Fuuka cannot seem to distance himself from the boy two years his junior, who has captured his heart more than anyone else ever could. However, every summer, no matter how lengthy, must come to an end.