El Shaddai: Ascension of the Metatron

Story-related.

Enoch finds and battles his 'old friend' Armaros, but before their battle can be concluded, the Darkness rises and ensnares Nanna, leading Enoch to plunge himself into the Darkness after her. Lucifel witnesses Armaros' grief at Enoch's descent and devises a plan to rescue Enoch, using an unexpected ally.