The beginning of disc 4 begins to explore the dark ending of the previous disc. Kotori has been murdered by her own brother and Kamui seeing this goes into a deep coma reliving the death of Kotori over and over again. Subaru, who can emphasise with Kamuiís situation, tries to reach out to him in his coma with his own special powers. Through showing the memories of losing his own sister, he is able to help Kamui break through this.
Upon awaking Kamui seeks to speak to Princess Hinoto and finds out that no
matter what choice he had made, Kotori would have died. The only
difference would have been that Kamui, not Fuma, would have killed her instead.
These recent events have caused a significant change in Kamuiís nature; he is no longer arrogant and now accepts help from the rests of the seven seals. This makes him a much more rounded and likable individual compared with before.
This fourth volume is kept at a particularly dark level. The game is now on; itís a battle for either the destruction or the salvation of Earth. The soldiers are lining up on both sides, and not surprisingly the man who Yuzuriha met in the last disk is none other than her enemy: a Dragon of Earth.
In this disc, there have been casualties occurring on both sides, but so far the losses have been even. However, is everyone fighting for the same side? The story begins to show a new side to Hinoto, is she really helping the Dragons of Heaven? Or is she sending them to their graves? Only through watching more will I find out.
Just trailers and DVD covers.