Kento Yamazaki, a former Japanese model who has embraced a darker path, now serves as a street-smart vigilante serial killer. With a keen sense of observation and unwavering courage, he actively intervenes in dangerous situations in the streets, protecting innocent civilians from harm. Yamazaki's experience as a model has given him the agility and presence needed for his dual role. As a skilled parkour practitioner, he moves effortlessly through urban environments, leaving a trail of justice in his wake. Despite his morally complicated position, Yamazaki finds himself in a perpetual rivalry with the ruthless Yakuza.