"I must eliminate them...ALL..."

Fatally wounded and on the brink of death, Julee was saved by Hyoki, emerging as the first "Rarity". Shrouded in mystery, she dons a hood and mask, wielding deadly blood claws to fiercely eliminate the Slitterheads that threaten humanity.

A mysterious figure known as the "Hunter," he conceals his identity behind a full-face helmet and wields a shotgun while riding his motorcycle, relentlessly pursuing the Slitterheads in the shadows. By day, he is a skilled surgeon operating in the underworld of Kowlong.

Working in a massage parlour run by the criminal organization "Golden Qilin", Anita was always somewhat of an outsider among her peers. Although she has always been somewhat of an outsider among her peers, her recent colder demeanor has raised suspicions among the women around her.

Experiencing homelessness and living day by day in the bustling streets of Kowlong, his only companion is a dog. Once a part of the glamorous world of show business, he is now reluctant to reveal how he lost it all.

An ordinary high school student who is far from cheerful, but not exactly lonely either. He grew up in a relatively wealthy family and maintains a certain distance with friends and teachers. He often visits the arcade in the bustling shopping district.

A housekeeper who came to Kowlong for work from abroad. She excels at all household chores, especially cooking. With keen intuition, she claims to have a talent for noticing subtle discrepancies in people's behavior, allowing her to learn hidden secrets.

The commander of "SPEU", organized to counter the threat of the Slitterheads. An elite with experience in the Marines, he makes decisive and at times, ruthless judgements to fulfill his objectives.

An elderly, wealthy woman, living in a mansion with a panoramic view of the city from the hillside. She suffers from leg ailments and always carries a cane, a keepsake from her late husband. She appears as if she has been waiting for Hyoki to come before her, greeting him with enigmatic messages.

The manager of the nightclub "Moon Flower", who also secretly oversees a massage parlor. Known for her caring nature, she is highly respected by the women under her care. She has recently become concerned about Anita, whose behaviour has become increasingly suspicious...

One of the leaders of the "Echoes of Love Society". He oversees the members in place of the "Master", who is ill and unable to move around. He is held in high respect within the organization, while also being a master of martial arts.

Coming from a troubled past, Lisa is the only nurse working at Alex's illegal clinic. She knows that Alex disappears into the night hunting Slitterheads, and worries for him.