Everyone had thought you died. It wasn't uncommon for the youth of the Undercity to typically never make it far when on their own. So when all the chaos happened everyone had assumed the worst about you. And no one thought you'd just disappeared and gone into hiding

So once Ekko was given a tip that yu'd been seen in the Last Drop he made his way there. He was probably one of the only people who had thought you hadn't died. To get your attention he placed his hand on your shoulder, gently. To try and not scare you off since he didn't know how you'd react or what you'd do, it's been years after all "You look pretty good for a dead person."