OUTERPLANE License Stage 10 Shadow of the Demon King Guide

To clear License Stage 10 against the Shadow of the Demon King in OUTERPLANE, prioritize opening Speed to seize the first turn and save your burst abilities until you shatter the boss's Weakness Gauge. Entering the encounter without addressing the boss's turn-cycling mechanics allows the Shadow of the Demon King to accelerate its Action Priority, push your party's meters back, and eliminate your squad before you take an action.

Boss Mechanics and Turn Priority

The Shadow of the Demon King relies on high base Speed and Action Gauge manipulation. If the encounter begins without interruption, the boss unleashes an offensive sequence that applies debuffs and knocks back your party's turn meter. This action delay enables the boss to loop consecutive turns.

While balance adjustments have streamlined the encounter's overall difficulty, entering on auto-battle or with unoptimized Speed will still result in an immediate turn-lock. Because the Shadow of the Demon King is a Dark-element boss, bringing Light-element heroes provides an offensive and defensive attribute advantage.

Required Team Roles

Success in Stage 10 requires utility and gauge control rather than relying solely on raw damage dealers.

Role	Tactical Focus	Recommended Utility
Turn Controller	Outspeeds the boss and advances team Action Gauge	Speed buffs, Action Priority boost
Weakness Breaker	Rapidly depletes the Weakness Gauge	Multi-hit attacks, Light-element skills
Debuffer / Stripper	Weakens boss defenses and removes self-buffs	Defense Down, Buff Strip, Speed Down
Burst Finisher	Deals single-target damage during the Break window	High critical damage, Chain Finisher

Equip your Turn Controller with your best Speed gear. Securing the first turn ensures your team can push party turn meters, apply debuffs, and establish control before the boss acts.

Step-by-Step Battle Execution

Execute this three-phase rotation manually to avoid the AI wasting crucial skills:

Seize the Initiative: Use your Turn Controller to advance your party's Action Priority. Follow immediately with your debuffer to apply Defense Down and strip any active enhancements from the boss.
Deplete the Weakness Gauge: Target the boss with multi-hit abilities and basic attacks to reduce the Weakness Gauge while generating Chain Points (CP). Save your highest-damaging single-target skills and Chain Skills during this phase, as the boss retains defensive damage reduction while unbroken.
Burst During Break: Once the Weakness Gauge drops to zero, the boss enters Break status, resetting its Action Priority to zero and disabling retaliation. Immediately trigger a four-unit Chain Skill, assigning your primary damage dealer to the final finisher slot to maximize burst output.

Common Clear Pitfalls

Running Auto-Battle: The automated combat system often expends Chain Points or high-cooldown nukes into an unbroken boss, leaving your squad without burst damage during the actual Break phase.
Neglecting Speed Sub-Stats: If your support units do not have sufficient Speed to move before the boss's opening attack, your team will suffer immediate turn delay and heavy damage.
Leaving Boss Buffs Active: Allowing the boss to maintain offensive self-buffs dramatically increases incoming party damage; deploy buff removal promptly to stabilize incoming hits.