@ShionSinX:
Plan B:
In this world EVERYTHING that is not within the close proximity of sentient beings turns into a haguremono - except for water, earth and air
So that means any item like a gem stone or so must be a drop item.
He obtained this drop rate ring by turning another ring into a haguremono and then defeating it.
So:
Monster A -> drop item A -> Haguremono = Monster B -> more valuable drop item B.
So how about he continues this chain.
Valuable ring -> fire demon haguremono -> drop rate ring -> unknown haguremono -> even better drop item, maybe increasing all drop rates +2 or more.
He should try if he cannot obtain a drop ring with +6 ranks to all drop rates.