ichigo losses his powers and goes to train at ryozanpaku. while training there the dojo is attacked and he regains/gains powers, after all the masters are taken down, taking down the attackers.
requirements:
shigure x ichigo
ichigo lost all of his powers
shigure is ichigo's master
powers must be from either bleach or kenichi the mightiest disciple(but can be a new expression ie: forming KI into a sword)
HAVE FUN WRITING IT
optional:
attackers are supernatural ie: hollow
elder's presence during the attack
ichigo training with other masters
ichigo is a master during the attack