[@Doc Doctor] You only draw five cards on the first turn of a duel.

EDIT: To clarify, this was a rule set in place at the start of the current (Arc-V) era to counteract the massive advantage that going first was. By giving the first player one less card, it's now a lot more important to choose first or second. I'm pretty sure we're not playing with the obsolete rulings, so unless the GM tells me otherwise you should only have five cards to start.