"Invisibilis Totalis!"
 
A silvery mist engulfed the sheer fabric on the table in front of Hisao, before fading into nothingness. Tucking his wand back into his cloak, he picked up the fabric and gave it a good shake. The fabric shimmered and faded in and out of sight as it settled. He had successfully completed the last component required for his plan, an invisibility cloak.
 
"Good. Now, let's get this party started before these enchantments wear off!"
 
Donning his newly made cloak and his enchanted satchel, he headed out of the boy's dormitories and off twards the girls bathroom.  Arriving at the enterance to the girl's dormitories, Hisao encountered his first problem. Yuuko, a highly overworked and underpaid faculty member, was hard at work cleaning the enterance hall.
 
Reaching into his satchel, Hisao grabbed a fairly large glass jar containing a highly agitated imp. He gave the jar a few good shakes before crouching down and rolling it off twards Yuuko. Noticing a bump at her foot followed by the sound of tiny claws scratching on glass, Yuuko lifted her skirt slightly to examine what had hit her.
 
 "Oh? What's this?" Picking up the jar, Yuuko realised there was an imp inside. A very angry imp, at that. "Hello there, little guy. You must be awfully upset, locked up in that jar. I can release you after I'm done here, so just wait a little longer, okay?"
 
Setting the jar on a nearby table, she picked up her cleaning supplies and went back to work. Grabbing his wand, Hisao pointed it at the jar and cast an opening spell, causing the lid to unscrew and fall on the floor. Noticing his freedom, the imp jumped out of the jar and began flying about the hall, knocking over various objects before setting his eyes on Yuuko. Before she realised what had happened, the imp had flown up her skirt and began tearing away at her clothes. Yuuko, too busy trying to stop the imp from stripping her completely, did not notice as Hisao snuck past and opened the door to the girls bathroom.