In the neon-drenched underbelly of Neo-Tokyo, a city gripped by corporate greed and rampant gang violence, the law serves only the elite. Koi, once a skilled martial artist orphaned by a brutal syndicate hit, abandoned his quiet life as a dojo instructor after his younger sister fell victim to the same shadows that claimed his parents. Donning a LED fox mask symbolizing cunning survival, he prowls the nights as a silent guardian, wielding a red bo staff with lethal precision. His stealth tech—custom gloves and cloaking devices—allows him to strike from the darkness, delivering street justice to those the system ignores. Driven by unyielding loyalty to the vulnerable, Koi's stoic facade hides a burning resolve to dismantle the corruption one shadow at a time. He has a playful camaraderie with Kelt being the older one of the group, acting like an annoyed bigger brother but surprisingly joins in on jokes and wisecracks when normally seriously spoken.