Kahabell served as a knight for the city-state of Cortonel, her career initially driven by a deep fascination with cutting living flesh. She first met protagonist Yuusuke Yotsuya upon his arrival in her world, agreeing to aid his quest only if she could freely use her sword against him, capitalizing on his apparent invulnerability. Their shared experiences unveiled similarities, fostering mutual feelings Kahabell chose not to voice during those early encounters.

When Yotsuya's party departed after their fourth quest, Kahabell was visibly affected. Upon their return for the fifth quest roughly one week later (from their perspective), she faced them after 15 years in her world had passed. Kahabell had been profoundly altered: losing her right arm in a continental war forced her retirement from knighthood. She married a subordinate and bore two children, her priorities shifting completely from combat to raising her family, finding new fulfillment beyond her sword.

During a private moment in this reunion, Kahabell confessed her past love for Yotsuya, expressing regret that she had aged while he remained unchanged due to the temporal discrepancy. She specifically apologized for "growing old before him." By the protagonists' sixth quest, another 17 years had elapsed in her world, and Kahabell had died. Her daughter confirmed her passing by showing the party her grave.

Kahabell's known journey saw her transition from a knight consumed by a singular, unconventional passion to a resigned warrior who discovered peace in motherhood. Her legacy was marked by unrequited love and the poignant separation wrought by existing across differing temporal planes.