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Dragon Form Shinku is the hidden Level 115 boss labeled ??? in 999 Nights. Clear the mode's main story and raise its party members to Level 100 to access the special challenge. This is separate from the ordinary story encounters involving Shinku.

The mode uses Esper Zero, Mint, Iroi and Shinku. The boss has no listed elemental weakness and uses a much more damaging version of Shinku's familiar attack patterns.

Create a Broken window

Prioritize reducing the Break bar before attempting a long damage sequence. Her combo finishers can defeat a party member quickly, so time dodges and parries instead of trying to trade hits. Once the bar empties, use charged Ultimates and your strongest attacks while she cannot retaliate.

Keep Iroi available

Use Iroi's healing and support to recover between the dangerous strings. Avoid spending every resource on offense at once; surviving the next finisher matters more than extending a combo into its wind-up.

Rewards

The fight can award the Mythic Crimson Sigil weapon, Mystery Buttons, Warren Gold Coins and other equipment. Prepare a strong Level 100 loadout for the encounter rather than relying on its reward as the gear needed to clear it.