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· As Otoha is a counter-attack unit primarily used off-field, focus on leveling up support skills and ultimates.
· You can choose whether to prioritize skill builds or ultimate builds based on your playstyle. Skill builds are generally more effective, but ultimate builds can be more advantageous in situations where the boss moves frequently.

· Level 70 Emblem: Recommended in the order of Counter Damage, Critical Hit Rate, Skill Damage or Ultimate Damage, Charge Efficiency, Elemental Damage.
· Level 80 Emblem: Prioritize Defense Penetration, Critical Hit Rate, Support Skill +3 or Ultimate +3.
· Potential (Skill Build): 'Predatory Shadow' and 'Rain-Soaked Sorrow' are recommended as core, while 'Bone-Chilling Rain' and 'Whispers of the Void' are also useful. Elemental Damage can also be considered.
· Potential (Ultimate Build): 'Lonely Lantern' and 'Predatory Shadow' are core, with 'Without a Trace' and 'Whispers of the Void' being good choices as well.

· The core potentials for the skill build are as follows:
- Predatory Shadow: Increases Defense Penetration and grants Defense Penetration to teammates (Core)
- Evening Rain & Shadow Wave: Increases Skill Damage and reduces enemy movement speed (Core)
- Bone-Chilling Rain: Applies a debuff that increases Counter Damage (Intermediate)
- Whispers of the Void: Increases party's Counter Damage (Core, especially for pure counter teams)
- Inevitable End: Increases Skill Damage in boss fights (Optional but powerful)
· By combining these potentials, you can maximize Otoha's skill damage.

· The following potentials are important for the ultimate build:
- Lonely Lantern: Increases Ultimate Critical Hit Rate by 15% (Very important)
- Predatory Shadow: Increases Defense Penetration (Core)
- Lonely Twin Shadows & Night Stalker: Ultimate-related potentials
- Without a Trace: Increases Ultimate Damage when using Support Skills (153% increase, powerful)
- Whispers of the Void: Increases party's Counter Damage
· 'Lonely Lantern' in particular significantly increases Ultimate Critical Hit Rate, making it a must-consider.

· You can easily raise Otoha using the provided build preset codes.
· It's efficient to level up potentials according to their priority. The strategy is to set high-priority potentials to max level and low-priority ones to lower levels, ensuring you acquire the necessary potentials first.
· For example, low-priority potentials like 'Fleeting Absolution' or 'Void Step' can be set to level 1 to focus on other core potentials.

· There are no specific recommendations for Disks; just use the most powerful one you have. It's recommended to use event Disks or fully enhanced Disks.
· For Otoha's duplicates (dupes), it's recommended to stop at Stage 1. Stage 1 duplicates provide the most efficient effect by increasing Counter Damage when skills hit.