TV-Series
Description
Sarah, a human teenager, is Maria's devoted pupil without official ARKS affiliation. Her personality merges calmness with bashfulness, often displaying disinterest and issuing swift denials when pressured. She possesses a notably poor sense of direction, a trait inherited by her clones.

During the Dark Falz assault on Oracle in A.P. 228, Sarah sustained near-fatal injuries. Klariskrays (Matoi) saved her by linking her life to Clarissa, drawing Luther's attention. Abducted by the Central Research Department, Sarah became the genetic foundation for Luther's Klariskrays III clones. Discarded after serving her purpose, she faced death again until Maria rescued and informally adopted her. Xiao healed her by sharing his life force, establishing a permanent link between them.

Under Maria's guidance, Sarah secretly investigated Luther alongside Maria and Xiao. She later assisted the protagonist. After Episode 2, Xiao tasked her with recruiting the protagonist to oppose Luther. During a time-travel mission to Dark Falz Elder's revival day, her past self aided Maria and the protagonist in repelling Elder.

In Episode 3, Sarah confronted her trauma, achieving closure with the protagonist and Huey. This culminated in her befriending her clone counterpart, Klariskrays. Post-Episode 3 ARKS restructuring led to her official role as Maria's second-in-command.

Sarah retains high photon manipulation aptitude from her Clarissa link and latent potential—traits amplified in her clones. Luther's experiments stripped her Technique abilities and turned her hair and eyes gray. Maria's training redirected her combat prowess to Wired Lance mastery, making her an exceptional close-range fighter. Her capabilities, evidenced by confronting Dark Falz Elder, prompted Maria to imply she surpassed Zeno, a skilled second-generation ARKS member.

In the anime, Sarah maintains her investigative role. She observes Klariskrays battling Dagans, instructs Ash not to interfere, and rescues unconscious ARKS members on Naverius. She assists Maria at the grave monument, guides Ash to Xiao's hideout, and facilitates his time travel to fight Elder alongside her past self. During Wopal data-retrieval missions targeting Luther's labs, she witnesses Theodor's Deuman transformation and Luther's facility destruction. She aids Ash in Theodor's confrontation, recalls Matoi's rescue when Clarissa activates, and her investigations frame Ash as a traitor due to leaked intel. Ultimately, she urges Ash to save Xion.