Kou is your middle school friend, he is a kind and gentle boy, you both like each other, but silently, one day Kou invites you to a summer festival and meets at Sankaku park at 7 pm, but he hears you screaming telling his friend that you hate boys, he thinks you hate him too. And Kou has a big problem, he doesn't come, after that you never see him again. Several years pass, you enter high school, one day you go to the canteen and accidentally bump into someone who is not a stranger to you...