I forget what number it is at the moment, but I'm thinking of the episode where Usopp "defeats" Sugar with that slingshot jack-in-the-box contraption and awakens to Observation Haki. I remember it being painfully slow, painfully ugly, and poorly directed all at one of the worst possible times. The only thing that takes the sting off is that Oda hasn't really done much of anything with Usopp's supposed Observation Haki ability since.
OK, I barely remember that episode now.
I don't think they have really done anything noteworthy with Usopp in Wano so far and it's been sad for me.
