Ep 100. The Birth of Two Character Transformations!

In the middle of the heated battle between Ikuto and Tadase, the Humpty Lock and Dumpty Key come up. Amu and her friends were wrapped in an overwhelming amount of light when a memory of Ikuto appeared. Based on one conclusion; the secret of the violin, the birth of Yoru - the past of Ikuto becomes clear. Amu realizes that the power of her two guys differ.