Empyrean: Ichiro/Abdiel Route

After the initial scenes, if your alignment matches, Tao will grant you the unique Rank Violation Miracle, costing 10 Glory.

Gustave's shop now offers Grimoires for 80000 Macca, though grinding Ara Mitama in Odaiba is more efficient.

Proceed forward for a scene, unlocking the ability to fuse Abdiel (Herald).

Collect items from chests along the west and east paths: 2 Physical Dampeners, 3 Grimoires, Gospel, Whittled Goat, Bead Chain, Magic Mirror, Chakra Pot, Attack Mirror, Balm of Life, and essences of Sandalphon, Vishnu, and Beelzebub.

Encounter Demeter on the east path (if her prior quests are complete) for her final quest, which is not route-exclusive.

Zeus will appear for his true boss fight. Demeter will join you and become available for fusion.

Zeus is Level 86 and uses skills like Madness Glint, Panta Spane, Luster Candy, Dekunda, Impaler's Animus, and Maziodyne. He is weak to Wind and susceptible to Physical critical damage. He also has a dangerous move called Keraunos.

Recommended strategy involves demons that null, reflect, or drain Electricity and Physical attacks. Nahobino should drain Electricity. Heavy-hitting physical attackers (like a leveled Yoshitsune) or demons with high-strength Almighty attacks are advised.

A specific strategy involves starting with Rasetsu Feast, swapping to a demon with Matarukaja and Debilitate, buffing allies, and then debuffing Zeus twice with Debilitate. Maintain buffs and debuffs throughout the fight, using Chakra Pots or substitutes for MP management.

If Zeus takes over 25% damage, he stops using Impaler's Animus and charges Magatsuhi. Having demons that null or drain Electricity is crucial. Enduring Soul is also beneficial.

In rare cases when charging Magatsuhi, Zeus may use Keraunos. A healer like Idun with the Megami Magatsuhi skill can fully heal allies.