Kurohime, Vol. 4 (Kurohime)

Zero is tricked into helping a "Ghost Carriage" whose passengers are spirits seeking revenge on the bandits that killed them. Their leader lures Zero aboard, but feisty Himeko's not having any of it, and a battle erupts. Zero quickly sees that the only way to save Himeko is to kill himself and continue fighting as a ghost. Will his selfless act inspire the love Himeko needs to regain her true form? And what does Kurohime do to incur the wrath of the gods above--again?!