Echocalypse: Scarlet Covenant Charlotte Oath and Skill Guide

To unlock Charlotte’s Oath in Echocalypse: Scarlet Covenant, recruit her, raise her Affinity to maximum, and give her an Oath Ring through her character profile menu. Completing the ceremony unlocks her specialized Oath skill, base attribute increases, and profile cosmetics.

Prerequisites to Unlock Charlotte's Oath

Before initiating the ceremony, fulfill two requirements in her character menu:

Reach Maximum Affinity: Present gifts and complete daily interactions until Charlotte’s Affinity gauge is full. Focus on her preferred gift items, which grant bonus affinity points compared to generic gifts. Purchase these boxes in daily Mall rotations or farm them from standard resource stages. Concentrating gifts on Charlotte rather than spreading them across your entire squad unlocks her Oath faster.
Acquire an Oath Ring: Oath Rings are limited resources typically sourced from premium shop packs, milestone login events, or limited-time event store rotations.

Because Oath Rings are rare, verify that Charlotte is a core fixture in your lineup before committing the item to her. Once both conditions are met, trigger the Oath prompt on her profile screen to bind her.

Oath Skill and Progression Levels

Completing the initial ceremony unlocks Charlotte's Oath skill and base stat bonuses. You can further level up her Oath bond to increase her combat scaling and skill power.

Progression Stage	Requirements	Key Unlocks and Stat Benefits
Ceremony Completion	Maximum Affinity, 1x Oath Ring	Unlocks Oath skill, profile CG, and base stat increases
Early Oath Levels	Common bond gifts, Gold	Flat increases to Charlotte's ATK, HP, and Physical/Magical DEF
Mid Oath Ranks	Rare upgrade tokens, gifts	Oath skill rank upgrade, increased damage ratios, and bonus critical stats
Maxed Oath Bond	Premium Oath essences	Maximum base attribute ceiling and peak burst damage multipliers

Combat Mechanics of the Oath Skill

Charlotte's Oath skill functions as a supplemental passive that integrates into her normal attack sequence without increasing her active energy costs. Depending on the skill level, it activates at battle start or triggers when executing active abilities. The passive provides damage amplification and penetration effects, allowing Charlotte to pierce frontline defenses, shields, and tank units more effectively across modes such as Guild raids, Kurocharo Operations, and Cage of Despair.

Because the Oath bonuses increase her base attributes—Attack, Health, and Defense—they multiply the stat gains provided by gear sets and external module enhancements.

Team Composition After the Oath

After completing her Oath, Charlotte functions primarily as a high-burst offensive carry. Organize your team around her updated stat thresholds:

Rage Generators and Buffers: Position support units that supply immediate Rage or reduce enemy damage mitigation early in the turn order to trigger Charlotte's burst rotation immediately.
Frontline Protection: Deploy dependable crowd-control or damage-mitigation tanks to absorb initial enemy strikes, allowing Charlotte to survive aggressive opening turns in PvP and high-difficulty PvE.
Flexible Placement: The defensive boosts from leveling her Oath allow Charlotte to withstand moderate area-of-effect damage, enabling flex positioning if your formation requires counterattack setups.