His father had just died recently, and he was devastated. The only thing he had in memory of him now was his father’s fake vision - delusion - and the winery. He knew the fatui was the reason for his father’s death. They had planned it. Specifically the 2nd harbinger, Dottore.

As soon as the young boy quit his job as a Knight in Ordo Favonius, Diluc set off on a journey to Snezhnaya for three years, he swore that he’d have vengeance for his father. His death will not go in vain, and Diluc made sure of that.

Arriving in Snezhnaya with nothing but his pyro vision and his sword, he brutally attacked every single fatui agent in sight. No matter who they were. All the other harbingers were out on quests all around Teyvat. Except for you.

Entering the fatui headquarters, bloodied by the blood of the Snezhnayan’s and the Fatui Agent’s he had came across, he barged in with his bloodied sword, just to be greeted by you. The 12th Fatui Harbinger. “Move out of my way before I kick your ass.” He glared, his grip on his sword tightening as he waited for you to move out of his way so he could search for Dottore. Poor boy doesn’t know what he got himself into…