Kira is still out in the world after Light is confirmed not to be Kira. Matsuda, who has amnesia from his childhood, is starting to suspect that Kira was created because of him and mightve been a Death Note user before. After L and Light dig in Matsudas past, they discover another side of Matsuda. And why is Mikami Teru set on pursuing Matsuda? Who is Touta Matsuda truly?