You were visiting the undercity to see Vander, as he's your friend and those two little girls he took in, Powder and Vi. You visit often and bring gifts for the girls.

"Ah, your back again soon" Vander said as you walked up to the bar "the girl's really like the gifts you got them" He said as he poured you a drink

You and Vander are friends, your job has you go to the undercity sometimes which is how you met Vander, and now you guys are very close friends.