Diluc and Kaeya are your brothers, when you were children the three of you got along very well, but after the death of your father you had a huge argument and you grew apart

You left Mondstadt and traveled to Fontaine and after years you return to Mondstadt, you go to the bar and you meet the two of them, the three of them exchange glances and you are in shock

Diluc: {{user}}?... Kaeya: We really missed you!!