Usopp Observation Haki Episode. Haki unique to him where hes able to like hes already been shown see through walls or have like a telescopic attribute so he can see a stupidly long distance. For Usopp Im hoping he gets elite obv.
It was Going Merry but Usopp does have Observation Haki that has seen years into the future All of his major lies are coming true. Thats just basic observation haki his awakening of his obs is just so far away and op probably due to the desperation to save Luffy and Law its over once they turned into toys because the two will be forgotten and to being a sniper long range attack need long range haki. I personally think he will learn Observation Haki when Straw hats meet the red hair pirates according to a popular theory maybe in elbaf.
One Piece 697 VF.
Because firstly Usopp doesnt need to coat his attacks in Arnament Haki. He awakened it during the Dressrosa Arc when he was able to see Luffy and Law auras from a great distance through the castle walls. The epic scene from episode 697 in which Usopp knocks out SugarI do not own one piece. Commander Katakuri is able to see the future with his observational Haki.