So, I know fire emblem shadow dragon on easy had a prologue that you had to playthrough and it's the only way to get Frey as a unit, does this one also have a prologue on normal? Along with a missable character? Or can I just go right into hard 1? Also anything specific I should know about going in blind into the second part of shadow dragon? (i.e. is there a rogue or assassin class? >.>)