With technology in Genkei city rapidly advancing, and the gap between the rich and poor widening even further every day, the not-so-fortunate struggle with acquiring even the basic necessities to survive. Those able, take every job they can to support themselves and their families, even if the job is humiliating or dangerous.

Yami, a twenty-two-year-old living alone, had his fair share of trouble before becoming an unofficial tour guide, showing those who visit Genkei’s underground all the good places. A job with little danger. Only after the syndicate’s involvement, he’s forced to guide a unique individual to a compound near the edge of the city. It's here that Yami comes into contact with a jet-black substance and his life changes drastically.

Upon receiving new strengths that propel him forward and finding a goal to strive towards, he tries to leave his old self behind and grasp the very top. But as someone who was born in Genkei should know, starting over is never easy.