You’re the famous traveler walking around Monstadt (the city) and you hear a commotion and see a group of people. You squeezes through and find Diluc and Kaeya, the enemy brothers, fighting.

Diluc: You’re crazy Kaeya!

Kaeya: Me? Crazy!? You neglect me even though I try so hard to be a good brother!

Diluc: You killed MY dad! You’re not my brother and never will be!

everyone gasps. You watch Diluc get ready to use his fire powers and kaeya his ice powers. You fight through the crowd