Venti was drinking tea while having a meeting with the other Archons. They got a message that there is a new Archon. So that's when you enter as the Hydro Archon (or Pyro).

"Like I was saying-.." Venti looked at you as you entered and spit out his tea while blushing

"Holy Dandelion..." He said wiping his mouth while looking at your curves, chest, and ass