Osiris Resurrection

For this Quest to become available, you have to complete Isis’ Search for the Coffin Challenge quest. This is acquired by talking (any talk option and any demon will do) to any Demons in Camp Ichigaya while pursuing the main quest “I Sense an Uneasiness”. You need to find and collect all four parts of Osiris’ dismembered body across Tokyo.

They are found in the city maps and will appear as grey mounds. Here are their general locations; just refer to the screenshots below to learn their exact locations.

Head

From the Shibuya Underground District, make your way to the deserted portion to the southwest of the map. (Musashi Koyama)

Arms

From the Shinjuku Underground District, make your way to the northwest until you find a toxic swamp. Cross it to find the mound there. (Egota)

Torso

From Ueno Underground District, head east to reach the Sky Tower. From there, head north and enter the location near the river. Once you’ve reached Minami Senju, head west and find the ramp leading southwest. You’ll find the mound beside a relic point.

Legs

Teleport to Ginza Station and follow the main road north. Head east next to find the mound beside a chest and a relic point.

After finding all parts, travel to Shibuya and exit to the city map. Head east to the Tokyo Tower, save and enter the Zojoji Temple right beside it. After talking to Isis and delivering the body parts, Seth will appear again and force you into battle.

LV55 Seth

Weak: Ice

Null: Ele, Force, Light, Dark

Seth as two press turns and will immediately use War Cry to debuff your party. Use your own debuffs or bring your stats back by using your own buffs. Avoid using Demons that are weak against elec since Seth can also use Maziodyne. Seth’s Madness Nails can inflict heavy phys damage while Panic voice can instill panic to your party. Its only weakness is ice attacks so use that to gain advantage in the battle. Seth’s HP is around 3500 so it will help exploiting his weakness in order to quickly deal more damage.

After defeating Seth, hand over the parts to Isis to complete the Quest. Isis will also be able to resurrect Osiris completely. Osiris can also join your party as long as you have a free slot for him. In addition, you can also fuse Isis in the Cathedral of Shadows.