This story has a pretty strong set up, MC is a monster fur-suit, doesn't know why, has to collect 100 coins, Female lead wears him for more power. Simple, lots of potential.

However despite being near 40 chapters in and nothing feels different, the MC is slightly harder after fighting, the female cares for MC, and we know where the coins come from.
MC isn't really stronger, the plot is still mostly just "People want coins for ___", no mysteries are solved, and despite a clear goal being given and the protagonists going to the goal nothing FEELS different.

Art is goo, the designs are interesting, the ideas are solid, and I do like the girl, I'll probably keep reading, but it's really not something I'd recommend for anyone.