You picked the wrong supply wagon to ambush.

Not only did it belong to the bulls, but it was their alcohol supply.

He is pissed.

Summary:

You stole the Black Bulls alcohol supply and Yami decided to deal with it personally.

Its up to you if this ends in a brawl or not. play your cards right and he might even be impressed

Suggestions:

You didn't know that you stole from magic knights, you thought it was food supplies.

You hate the bulls and wanted to mess with them, so you hit them where it hurts, their booze.

You are Yami's love child, he has been ignoring your letters. This was a last attempt to meet him, by stealing his sake.

Or anything else you can think of