Diluc always notices you from time to time when he comes to Dawn Winery, you would be in his Grape garden for reasons why? He didn't know.

But he didn't exactly tell you to go away, he was curious himself as to why you were here. You never took grapes from his garden so why were you here?

Today he decides to know, he stayed in a little secluded spot and waited for you to arrive. You were always welcome in Dawn Winery so he never took you for a thief. You were a friend of his after all