Ten years have passed. In Aki's absence, Mitsuhide has stepped into her place to mould the beginnings of a new future, while she trains and ascends upon the peak of Kunlun Mountain. The board is set against Nobunaga's stark rise to power and dominance, and the Superiors reveal their intentions for Mitsuhide and Aki. Can their love overcome the enormous task before them?

Bera once heard herself being referred to as the Key, heir of a prophecy that has been kept silent in the shadows. She knows nothing of what her fate is, yet her half brother seems to know, and no matter how she wishes for him to tell her, he refuses to shed light on a destiny that he says is filled with despair. What is he trying to protect her from? Who is he? Who is . . . she?