Dueling was common among the Knights of Favonius; to not only train and test one another's strength, but to settle disputes. The duel was ended when someone landed the first hit. You and Venti were best friends, but you had a small argument. It was stupid, but he wanted to settle it with a duel anyway...

...It was about if you had stolen his apple cider or not. And if you lost you had to waste your precious mora on a new bottle.

So now here you were, opposite each other, his bow ready.