[Taking it easy does sound like Venti! (Granted, there are many things Hijikata never found out about any timeline's Venti he met, like that he's more than just a little bard who enjoys a good drink, song, and dance.)]

Well, if something ever draws you out there and you need an escort, feel free to call on me.

[He pats the multiple swords at his hip (yes, this is a library, but he's seen some shit; you never know what might happen!). Come to think, this Venti doesn't even know his name yet!]

Toshirou Hijikata. I can give you my contact details - unless you're already sorted out.

[It's not like they don't have a bunch of capable people from Teyvat here, and even outside of that, a sociable person like Venti probably already has his bases covered!]