Spanish. Yes, it's quite beautiful. [and that only confirms that diluc has never heard it. while diluc was on his world revenge tour for... well, revenge, it also broadened his horizons to what the rest of the world had to offer including language and cuisines and culture. he can definitely understand the the joy of meeting all kinds of different people. kenos truly takes it a step further by introducing them to people of different worlds.]

Indeed. I had thought there was no better way to meet new people than to be a bartender back in my hometown. Kenos certainly showed me otherwise.

[he takes a washcloth to the cup he'd just washed, drying it.]

It's surprising that half recognized it - one would think each world had their own unique languages, but it sounds as if some worlds may share a few traits.