As long as you keep drawing.
That's actually what I'm not understanding... I don't see where the skill says that you need to draw for EACH ""hit"", it looks too me like you need to draw only once each turn.
For example... I draw and immediatly do an attack action, with One Strike Two Cuts I attack twice in the same attack action, from what I read in the description imho both attacks should get the bonus dices.
Same if I draw and do a full round attack... but googling for it it seems that most people say it doesn't work for the full round and neither for the ability of the Iaijutsu Master (that seems to be made just for that purpose).
Too bad they never explain WHY and I'm reading the opposite in the RAW... can someone explain that? :\