To Control the Beast, I Can Only Contract with the Boss

This is a cool novel about animal control that subverts the tradition. Here, the protagonist no longer raises cubs from scratch, but directly signs a "temporary labor contract" with the ultimate overlord of each secret realm. While others are still ecstatic about contracting a juvenile spirit beast, his worry is: "My boss has not met the KPI this month. Should I fire him and replace him, or let him work overtime?" It's mindless, don't watch it if you don't mind