TV-Series
Description
Christina appears as a playable character holding significant background roles. She served as vice-captain of the Nightmare guild and ascended to guild master of Round Table within the series' prequel timeline. She ranks among the Seven Crowns, bearing the title "Regina Geas".

Her current role involves producing the idol guild Carmina, marking a departure from prior antagonistic affiliations. In combat, she operates as a frontline physical attacker, delivering high damage potential while possessing lower defensive capabilities. Her peak stats show substantial physical attack power (23,515; 24,710 with Unique Equipment) and significant physical critical strike capability (1,339), balanced by relatively lower physical and magic defense (406 and 263 respectively).

Her abilities emphasize self-enhancement and TP management. Her primary skill, Overlay+, temporarily boosts physical attack, increases TP gain rate, recovers a substantial TP amount, and grants a permanent physical critical damage increase lasting until battle end. Bond level advancements further augment her physical attack and provide wave-based TP recovery.

A seasonal variant introduces a coin mechanic altering her combat function. Without a coin, her Union Burst deals significant physical damage, massively boosts her own physical attack, and grants a coin. Consuming a coin guarantees her Union Burst hits while dealing substantially increased physical damage. Her supporting skill, Enhancing Present, grants large physical attack boosts to all physical-attacking allies when coinless, or moderate party boosts plus a massive self-attack boost when holding a coin. Her secondary attack skill, Destruction, deals moderate frontal damage and adds a TP Boost for all allies when a coin is active. This variant shares similar frontline positioning risks and durability limitations.

Personality depictions note a strong sense of duty and responsibility, favoring practical solutions and a methodical nature. She exhibits a preference for stability and predictability, sometimes presenting a reserved demeanor attributed to introverted tendencies.