Which Episode Luffy Use Supreme Haki -

One of Luffy's earliest displays of Haki was during his battle against Buggy the Clown (East Blue Arc, episodes 24-41). He used his Observatory Haki to sense Buggy's presence and anticipate his movements.

(Wano Arc)

Kaido’s head snapped back, a line of blood trickling from his mouth. He looked down at the young pirate, whose straw hat cast a shadow over his glowing eyes. which episode luffy use supreme haki