"Oh, hey Daisy!"

There's a good natured smile on Lupin's face as he addresses Daisy, mercifully not in the water and wearing a pair of swimming trunks. She has no reason to kick him, unless she happens to be in the nude and is shy about people seeing her.

He's hoping that they can meet on decent terms this time, and believes that making peace with his neighbors is important. An interesting girl like her? It's best to be on her good side.