Saya Minatsuki was a highly skilled sweeper, known for her carefree and unorthodox approach to bounty hunting. Unlike most bounty hunters who worked for money, Saya pursued criminals on her own terms, capturing them without malice or hatred. She valued her freedom above all else, refusing to live under anyone else’s control or expectations.

Her life took a major turn when she met Train Heartnet, who at the time was an assassin for Chronos. Unlike everyone else, Saya did not fear Train or see him as a monster. Instead, she treated him like an ordinary person, talking to him casually and inviting him to spend time with her. Through her kindness, humor, and genuine nature, she broke through Train’s emotional walls, making him question his loyalty to Chronos and whether he truly wanted to live as a killer.

However, her friendship with Train drew the attention of Creed Diskenth, Train’s former comrade, who saw Saya as a threat to Train’s “true potential.” Believing that she was corrupting Train’s destiny, Creed murdered Saya, forever changing Train’s life and setting him on the path of becoming a sweeper in her honor.

Saya had long, light brown hair tied in a loose ponytail and warm brown eyes, giving her a relaxed and approachable appearance. She often wore a black tank top, blue denim shorts, and a long red jacket, reflecting her carefree and laid-back nature.

Her signature accessory was a small silver bell attached to a choker, which she later gave to Train as a gift. After her death, Train keeps the bell as a symbol of her influence, wearing it as a constant reminder of her ideals and his promise to live freely.

Saya was an independent, cheerful, and free-spirited individual, embodying the philosophy of living life on one’s own terms. She never let society’s expectations define her, choosing instead to follow her own path, regardless of what others thought. Unlike Train, who initially saw life in black and white, Saya believed in choosing one’s destiny and not being bound by the past.

She was incredibly kind and accepting, never judging people by their reputations or past mistakes. This was evident in her friendship with Train, as she saw him not as a cold-blooded assassin, but simply as another person searching for meaning. Her ability to see the good in people and encourage them to find their own way was her greatest strength.

Despite her playful and carefree nature, Saya was strong-willed and fearless, never hesitating to stand up for herself or those she cared about. She was a skilled fighter but preferred to resolve conflicts without killing, using her wits and sharpshooting skills to take down criminals in a way that aligned with her ideals.

Though her time in Black Cat was tragically short, her personality and ideals left a lasting impact, particularly on Train, who adopted her way of life after her death.

• Meeting Train Heartnet
  Saya first encounters Train while enjoying fireworks on a rooftop, where she casually talks to him as if he were just another person. Train, accustomed to people either fearing or idolizing him, is caught off guard by her easygoing attitude. This marks the beginning of their unlikely friendship, as Saya continues to meet with Train, exposing him to the idea of true freedom.

• Changing Train’s Perspective
  As Train spends more time with Saya, he begins to question his role as an assassin and wonders if he truly wants to continue killing for Chronos. Saya’s philosophy of living freely resonates deeply with him, making him rethink his entire existence. She even invites him to become a sweeper like her, though he is initially hesitant.

• Murdered by Creed Diskenth
  Creed Diskenth, obsessed with Train and believing him to be destined for greater things, sees Saya as a threat to Train’s potential. Viewing her influence as a corruption, he murders her in cold blood, believing that her death will push Train back into his assassin ways. However, instead of making Train embrace his past, Saya’s death has the opposite effect. Filled with grief and anger, Train leaves Chronos behind and fully adopts Saya’s way of life, becoming a sweeper in her honor and vowing never to take another life unless absolutely necessary.