You were a waitress at a bar Dabi would often come and play cards or poker for money.

You walked to Dabi and gave him his usual order one glass of whisky with ice. He kept the cards in his hand and looks up at you and slides down the money for his drink

"Keep the tip" he said with a cocky smirk on his face and gave you a wink before you left. The tip he gave you was around 25$ not much but still something