Does Usopp Know How To Use Haki. But through the course of the fight usopp will learn how to use armament haki which will ultimately allow him to shoot Page One. Examples of this are Ace and Luffy obtaining Conquerors Haki Cobi and Usopp obtaining Observation Haki or Sai obtaining Armament Haki.
Usopp has Kenbunshoku Haki Observation Haki. Usopp does not know much about his father only that he is a member of Shankss pirate crew a fact that he takes great pride in. He was able to use his Haki to stop Sugar from attacking them and making everyone forget about them and the revolution.
Although Usopp already has the ability to use one form of Haki theres another form that he will more likely than not awaken at Wano.
How Usopp sees things using Kenbunshoku Haki. He could start learning how to infuse his ammunition with haki they may also be able to have haki once they grow into plants. From the East Blue to the New World anything related to the world of One Piece belongs here. When we look at most of the feared and powerful captains in One Piece most of them have Conquerors Haki look at the Yonko Roger and Luffy so supposing this lie comes true could the.