Uryu is trapped in a world where he never met the Amagami Sisters...and is Shirahi's boyfriend?! But thanks to Uryu's shared past with Yae, he is able to reestablish a tie to the Amagami family! As he and the sisters work on a plan to return him to his original world, Shirahi arrives at the shrine...and reveals everything! A wish to the Dark God caused all this, and another could end it. But as Uryu and Shirahi stand at the crossroads of fate, Uryu must choose his destiny-and be willing to live with the consequences! Whose fate will he bind himself to? And is there something more to ""tying the knot"" than marriage...?