I'm not understanding the summoning of ninjas

[Crown_Axe]

i was reading the manual it sounds like you can't summon 0 ninjas because they are equal and less then my turn count. Can you explain.

Additional Comment:
sorry but i just read it for the 20th time and relised that i kept on missin a word that fixes it

[Dekoy]

I think your first turn count is zero, but someone else should really confirm that.

[D.D master]

I can confirm it