"The smoke from your gun is your last gift to me."
"I'm sorry, I broke my promise."
Xia Bei, who escaped from the heinous K. D. Organization, met Yu Ze.
But because of this, he once again went against K and D, which led to him being hunted.
After each confusing case, the truth unfolds before our eyes.
But, will the previous promises continue?
Or is this just a broken promise?
[An unserious mystery romance novel]