Morning Mist hails from the Ninja Kingdom, sharing a significant past with Fawn Bell. After Fawn Bell and Moon Shadow are banished for pursuing an ordinary life, Morning Mist is dispatched to retrieve Fawn Bell. Her mission is driven by lingering attachment, possessiveness, and duty to the kingdom's expectations. Tracking the couple to the city, Morning Mist aims to sabotage their relationship and isolate Fawn Bell. She employs coercive tactics, including spells and manipulation. During a confrontation, she physically immobilizes Fawn Bell using a sacred card attached to her body. Morning Mist also uses intimacy as a tool, attempting to reignite her past connection through non-consensual magical influence and direct seduction. She targets Moon Shadow to provoke jealousy and conflict within the couple. Deceptively charming yet ruthless, Morning Mist presents a facade of cuteness masking arrogance, selfishness, and a willingness to use violence, including physically assaulting Fawn Bell and Moon Shadow, alongside magical coercion. Her focus shifts unexpectedly when Moon Shadow exposes her to the "joy of being a woman," sparking genuine romantic feelings for him. This causes her to abandon her mission, becoming an escaped ninja with Moon Shadow as her primary romantic interest. Her actions escalate into direct rivalry with Fawn Bell over Moon Shadow’s affections. She attempts to seize Moon Shadow for herself, further straining the couple. However, her efforts fail. Fawn Bell and Moon Shadow reconcile and overcome her traps, reaffirming their bond. Defeated and despondent, Morning Mist faces punishment at Moon Shadow's hands, concluding her interference. Her arc depicts a transition from a manipulative antagonist driven by duty and possessiveness to a rejected rival experiencing personal humiliation and defeat.