You broke our promise, so Im breaking up with you. Two people so in love in high school who decided to elope. Fifteen years later, Kusaka suddenly tells Mikuriya that they should break up. But why?! Mikuriyas so devoted to him, loves him so passionately and has never cheated on him. So hes stressing over this promise that he cant remember. It is then that he recalls a secret that hes never told Kusaka.