[THE ONLY ONE TO MOVE UP]
Valid:
If this Ninja is sent out to Attack with a "Genin" Ninja as the Head Ninja, that "Genin" Ninja gets +1/+0 during the turn.
Valid:
If this Ninja is sent out to Block with a "Genin" Ninja as a Back Ninja, that "Genin" Ninja gets +0/+1 during the turn.