Story[ | ]
Featured Characters[ | ]
Side Featured Characters[ | ]
Storyline[ | ]
Return to the Underworld Storyline
Event Obtainables[ | ]
- Job Change:
- Arkil upgrade to Freedom Rogue
- Tokens acquired from kill all foes mission from EX
- Sabel Shisha Diagram Piece and Sabel Turban Diagram Piece: 20 pieces from clear 1x milestones for episodes 1 and 3, other 60 drop in those 2 episodes
- Sabel Veston Diagram Piece and Sabel Bracelet Diagram Piece: 20 pieces from clear 1x milestones for episodes 2 and 4, other 60 drop in those 2 episodes
- Sabel Hightops Diagram Piece and Sabel Revolver Diagram Piece: 20 pieces from clear 1x milestones for EX single and multiplayer, other 60 drop from episode 5 and EX
- Jin upgrade to Karma's Dark Shadow
- Tokens acquired from clear 1x milestone for EX+
- 20 pieces of each of the 6 items from clear 5x milestones for EX+, 40 pieces of each item from the quest missions from EX+, other 20 of each item drop in EX+
- Arkil upgrade to Freedom Rogue
- Gear: Cursed Kunai - Blood Edge (with special ability for Jin)
- EX Coin x 50
- Token:
- Desert Zone Token x 30
- Wadatsumi Token x 40 (also farmable in EX+)
- Soul Shards
- Sinful Indulgence x 2
- 250 Gems
Event Quests[ | ]
- Episode 1 Wind & Darkness (Unit Lv10 JobLv2 Recommended, 10 AP)
- Episode 2 Spreading Darkness (Unit Lv20 JobLv4 Recommended, 15 AP)
- Episode 3 In with Demons, out with Luck (Unit Lv35 JobLv6 Recommended, 20 AP)
- Episode 4 That Which Spoils (Unit Lv55 JobLv9 Recommended, 25 AP)
- Episode 5 Saving Darkness (Unit Lv65 JobLv10 Recommended, 30 AP)
- Return to the Underworld [EX] (40 AP)
- Return to the Underworld [EX] (Multiplayer, 20 AP)
Event Guides[ | ]
- Return to the Underworld EX+ All Missions - Jin, Hayate, Fujika, Chihaya by Sairento-kun (YouTube)
- Return to the Underworld EX+ All Missions - Jin, Hayate, Fujika, Chihaya by Opelucid (YouTube)
- Return to the Underworld EX+ All Missions - Jin, Hayate, Hazuki, Chihaya by Eltanin (YouTube)
- Return to the Underworld EX+ Jin Solo by L. Marco (YouTube)
Event Milestones[ | ]
[Limited Time] Return to the Underworld[ | ]
[Limited Time] Return to the Underworld [EX] [Multiplay][ | ]
| Name of Milestone | PEXP | Gems | Other Rewards |
|---|---|---|---|
| Clear Return to the Underworld [EX] [Multiplay] |  Sabel Hightops Diagram Piece (x10),  Sabel Revolver Diagram Piece (x10),  Cursed Kunai - Blood Edge Shard (x20)
|
Quest Mission Rewards[ | ]
Episode 1 Wind & Darkness[ | ]
| Kill all foes: |  Silver Ingot x 1
|
| No deaths: |  Skip Ticket x 1
|
| Max 5 items used: |  Damask Ore x 10
|
Episode 2 Spreading Darkness[ | ]
| Kill all foes: | Silver Ingot x 3
|
| No deaths: | Skip Ticket x 2
|
| Clear without continues: |  Mithril Ore x 10
|
Episode 3 In with Demons, out with Luck[ | ]
| Kill all foes: |  Gold Ingot x 1
|
| No deaths: |  Compass x 1
|
| Clear without continues: |  Adamantine Ore x 10
|
Episode 4 That Which Spoils[ | ]
| Kill all foes: | Gold Ingot x 3
|
| No deaths: |  Lion Monarch Shield x 1
|
| Clear without continues: | Adamantine Ore x 15
|
Episode 5 Saving Darkness[ | ]
| Kill all foes: | Cursed Kunai - Blood Edge Shard x 80
|
| No deaths: |  Sacred Lion Blade x 1
|
| Clear without continues: |  Dark Soul Shard x 5
|
Return to the Underworld [EX][ | ]
| Kill all foes: |  Arkil Token x 6
|
| Clear with max 4 units: |  Crystal Sword x 1
|
| Clear without continues: |  Fire Soul Shard x 5
|
| Clear exclusively with units from Desert Zone (origin): |  Desert Zone Token x 30
|
| Clear without mercenary: |  EX Coin x 25
|
| Kill 3+ foes in one blow: | EX Coin x 25
|
Return to the Underworld [EX+][ | ]
| Don't use items: |  Mystical Barrier Scarlet Katana Diagram Piece x 40
|
| Kill all foes: |  Dark Attire Diagram Piece x 40
|
| Clear without mercenary: |  Detonator Kunai Diagram Piece x 40
|
| No deaths: |  Sacred Sake of Purification Diagram Piece x 40
|
| Kill 4+ foes in one blow: |  Handbooks on Medicinal Herbology Diagram Piece x 40
|
| Clear with max 4 units: |  Sentimental Bookmark Diagram Piece x 40
|
| Clear exclusively with units from Wadatsumi (origin): |  Wadatsumi Token x 40
|
| Complete all quest mission conditions in a single try: |  Sinful Indulgence x 1
|
Event History[ | ]
- Released August 9, 2018
- Rerun October 25, 2018
- Rerun January 17, 2019
- Rerun June 6, 2019, added to Event Archives with new mission rewards
- Rerun July 4, 2019, added EX+ stage, with an upgrade of Jin J+ (Ninja+ to Karma's Dark Shadow) and Arkil J+ (Magic Swordsman+ to Freedom Rogue)
- Rerun April 30, 2020
- Rerun July 30, 2020
- Rerun December 23, 2020
- Rerun May 27, 2021
- Rerun September 2, 2021
- Rerun December 30, 2021
- Rerun March 24, 2022