Genshin tips and tricks and general chaos

so presumably you know the trend of traveler getting rescued by an anemo boy at the end of the archon quest, or to be more specific a 5-star anemo boy (sorry Heizou). I was trying to predict this for Fontaine but Fontaine doesn't... have any anemo boys. There's Lynette, but that would be breaking the trend as she's a girl and they seem to like symbolism. Now while one could show up later there's been no leaks or anything which there usually would be by this time. I have some thoughts and this is my evidence.

all of that above about the anemo boy rescue

It was mentioned in the special program that the traveler would be getting help from some old friends. (For the theory l'm assuming this is a playable character from a previous region)

furina mentions in act 1 that she wouldn't hesitate to convict other archons in court (or something like that)

so my theory is that venti will make an appearance, and his use in the poetry event in 4.1 is a kind of sneaky way to disguise his presence in the archon quest.