Just three words, “I love you”—but I could never bring myself to tell her…

Between the friends I knew so well,
there lay a secret relationship I had never known about—

The pure-hearted protagonist, Haruta Fuyutsuki,
had always harbored feelings for his friend, Rio Inami.
He finally mustered up his courage and confessed his love,
and the two officially became a couple.
He was basking in happiness—

However, both Rio’s body and heart already belonged to someone else.