Usopp awakened Haki during the Dress Rosa arc, and he was able to utilize Observation Haki with quite a lot of finesse.

Not just that, but later on in the timeskip, Usopp even develops immense willpower to allow himself to use Observation Haki with his sniping. As a result, not only does he become much more useful ...

The world of One Piece continues to evolve and expand with each new chapter, as Eiichiro Oda masterfully unveils new layers to his grand narrative. While Devil Fruits and Haki have defined the ...

One Piece‘s manga has also previously used very similar onomatopoeia ... trained by Gaban in Observation Haki would be the perfect opportunity for Usopp to improve as a sniper.