Karasu arrives in purgatory with Shirasagi while the angels decide how to deal with him. While a war between Heaven and Hell soon begins, Dominions and Karasu start their own fight and the Archduke soon gets involved. What happens to the Archduke and Dominions? Karasu also makes the ultimate sacrifice for Shirasagi - what is the result?...

Karasu may have retrieved Shirasagi from the clutches of Beelzebub once, but Hell isn't quite ready to give up its claim just yet. However, the appearance of Koumori and Sarugami--a new ally and an old friend--may force our pair to not only acknowledge their debt to each other, but their true feelings as well....