Concerned about Aoto's emotional disconnect, Akane and Midori look him up on the academy server, but his information were classified. Determined, the two steal Undine's access pass and finds out that Aoto is a suspect of the Blue Christmas massacre.

Led by the spirit of the key, Akane, Midori, and Aoto reaches the front of the Gate. There, the Key gives them the option to choose their own fate. However, they quickly learn that the Divine Gate is much more than just something that grants wishes...