Lan Wangji and Lan Xichen
No, there were no true burdens that rested upon his shoulders. There was no Sect for him to take into account, to bring together. To make sure that things went rather well for everyone. That? It was something that he missed, to an extent. He knows that his brother is happy. After all, showing up in Madison Valley pulled him out of seclusion and had him interacting with people again.