Kazuya and I attend the same university and seminar, and we are best friends. Noa is his girlfriend, a second-year student two years behind us. I had planned to confess my feelings first, but Kazuya beat me to it. He is handsome and popular, so I told myself it could not be helped—yet I cannot stop imagining what might have happened if I had spoken up sooner and Noa had become my girlfriend. Those fantasies are nothing but the shape of my regret.