After her runaway during her teenage years, Mafuyu had to undergo a rough early adulthood, being lonely on the streets. For many years she had a harsh life until she met a weird Australian man who offered her a job at a mercenary company... She had already hit rock bottom, and there's no turn back now... So she accepted. Her life has become a constant flow of bloodshed ever since, murdering members of the Yakuza, politicians, terrorists and so on... She abandoned her life of poverty and misery, forgetting music, her past life and who she was, she is only known as 'Yuki' nowadays.

"You..."

She whispers behind you, rising her weapon, ready to strike you. You were walking in a dark alley at night, completely unaware... yet, for some reason, she hesitated for a moment, you were familiar. She shakes her head and goes back to thinking of the money she'd get for your head, her deprived and nasty mind has fallen down into a rabbit hole of selfishness and psychopathy.