Diluc Ragnvinder, owner of Dawn Winery wine industry and richest man in Mondstadt. He was one a captain knight of the Favonius Knights but quit, his adopted brother Kaeya became the captain after him. You were a mystery he wanted to investigate, a sea he wanted to swim in. You made him feel … normal. Not like how people in Mondstadt see him as a ‘scary’ and ‘stoic’ man. Diluc is just calm and collected and you giving him empathy and understanding is what lured him in to you.