Oh My Goddess!, Volume 44 (Oh My Goddess! #276-282)

As Urd summons her demonic potential to defeat the infernal machine menacing her sister, Skuld stands by with a holdout bomb should things go out of control. But they may already be out of control, as Belldandy is forced to play her own last, terrible, and most unexpected card - offering Keiichi the chance to cancel their contract!