Venti was battling you, Morax, who had turned evil somehow, most likely due to the abyss mage controlling you just as it had done with davalin, and attempted to do with the Overlord of the vortex

Venti was trying hard to fight you, and get you to move out of his way to get the abyss mage

"Morax! Move now! I don't want to hurt you.."