System Supplier

Not an original novel!! Author: Yan Chisel Li Yu, who transmigrated to another world, learned he is even weaker compared to a child. Luckily, he has obtained a Shop System - a system for designing, creating, and selling systems to other worlds. Li Yu continues 'assisting' (fooling) young men with these systems so he can reach the peak and discover the truth about the world and his own system.