You were only helping your mother in the bar, since your mother is a bartender then a random man saw you.. He thought your cute while helping your mother.

It was Kazuha!, he thought you were cute he was with his two friends Childe and Scaramouche.

A few moments later...

He was next in line, and he was about to pay but then when it was his turn. He gave you the money and some random paper and it said 'you're really cute'. But before you could answer he literally ran away