Diluc once served in the Knights of the West Wind, but later he could not stand the ways of the knights and left, so Qin called him Diluc-senpai.
Captain Qin and Diluc are recognized as CPs by players, but their emotions are not clearly expressed in the plot and voice stories. Qin admires Diluc. In her eyes, Diluc is an elder, and because of this, Qin will show her weak side only in front of Diluc. Diluc didn't seem to reveal his true feelings, and he didn't say much about Jean.
Diluc’s identity and background
His family has placed high hopes on him since he was a child, and he soon became the youngest captain in the history of the Knights of the West Wind. But the good times did not last long. Diluc's father was killed when he was 18 years old. The unfair treatment of the Knights made him angry and quit the order.
After that, Diluc inherited his father's winery and ran it for many years, becoming the most famous rich man in Mondstadt. Three years after Diluc resigned from the Order, the Fools came to Mondstadt with ill intentions. In order to protect Mondstadt, Diluc and Kaia took action.