Author's Note: This is my first fan fic so I thought, I might as well start with a crossover. I'm not copying other Toushiro Hitsugaya/ Harry Potter stories and I'm gonna try my best to make it different from the others. I'm gonna write down some main bleach chraracter descriptions for people who would be confused.

Hitsugaya Toushiro: Wielder of the most powerful ice based sword in the Soul Society and captain of the tenth division. He is a child prodigy with white hair and ,and much to his annoyance, short. Actually quite mature, but hates it when he is treated like a child.

Matsumoto Rangiku: A blond haired, large chested girl who is the lieutenant of the tenth division. She loves to drink Sake and suffocate her captain by hugging him.

Hinamori Momo: A child hood friend of Hitsugaya, she was the lieutenant of the fifth division before Aizen betrayed her and the Soul Society.

And taicho means captain.

Well, enjoy:

Toushiro Hitsugaya, the captain of division 10 was outside on a crisp early morning.

Taking a deep breath, he sighed and looked to the east, waiting for the sunrise.

The sky grew purple, orange and other colours before the sun finally poked out.

Satisfied, he gave a faint smile and entered back into the office where Matsumoto gave him a bear hug. Suffocating, he angrily pushed and started lecturing his lieutenant.

"Matsumoto, would you stop doing that already?!" He yelled angrily.

"But taicho, you're just so small and cute..." she got the reaction she was waiting for.

"Matsumoto... What did you say?" Hitsugaya stared at her with his deep turquoise eyes, that were filled with annoyance.

"Catch me if you can!" She grinned and shunpoed away.

Usually, Hitsugaya wouldn't bother with her silly, and immature games.

But he would be leaving today and this might be the last time for a long time.

He sighed and followed after her.

Matsumoto entered the dining hall for the tenth squad and saw Toushiro follow after.

Immediately, she yelled "SURPRISE!" along with with a couple dozen people.

Most of the captains were there, including Kuchiki and Ukitake.

Even Kenpachi was there grinning eagerly like he was waiting for a fight.

Hinamori along with the lieutenants were present with gifts although Yachiru seemed to be devouring her gift of candies.

All of division 10 was there smiling and holding a banner that read 'GOOD LUCK ON YOUR MISSION TAICHO!'

Toushiro eyes widened and Matsumoto ruffled his hair which he tried his best ignore. "Thank you," he smiled.

"I hope your mission is successful, Shiro-kun" Hinamori smiled. She handed him a picture that was framed. It showed the entire squad ten and Hinamori grinning next to Matsumoto.

"Thanks Momo," Hitsugaya smiled.

"Let's get this party started!" Matsumoto yelled as she brought out gigantic Sake bottles, which earned many cheers from the group(and a sigh from Hitsugaya).

5 hours later everybody but Hinamori and Hitsugaya lay drunk on the floor.

Matsumoto was mumbling as she cuddled with one of the Sake bottles and Kuchiki had left 4 hours ago.

Hinamori hiccoughed and there was a faint blush on her cheeks. "Shiro-kun?"

"Yeah?" Toushiro frowned.

She seemed really drunk, after Matsumoto made her chug the Sake.

"I really hope you make it back safely," with that she smiled, and passed out.

Hitsugaya stood up and left the dining hall, a feeling of uneasiness washing over him.

___________________________________________________________________________________

Yamamoto-taicho was waiting for Hitsugaya-taicho at the gate.

He had a grim expression on his face as always and his battle scars were even more prominent today. Hitsugaya appeared with a trunk and a letter clutched in his hand.

He bowed before the commander and was about to enter the gate when the old man stepped in front of him.

"Hitsugaya-taicho,"he said sternly, "I have given you the instructions, but there is one more thing. Though your mission is important, those Dementors are not ordinary hollows. They would feed on your happiness and may even attempt to eat your soul. It would be especially dangerous for you in your true form. That is why, you must only come out of your gigai when there is no other choice, understand?"

"Yes, commander," Hitsugaya entered the gate with a hell moth and appeared in front of Urahara's shop.

"Welcome," Urahara approached him, "I've been expecting you Toushiro-kun," he smiled.

"It's Hitsugaya-taicho," Toushiro frowned.

"Come in, I got your gigai ready," Urahara continued, ignoring the little captain completely.

They walked in where a blank gigai, dressed in black jeans and a plain t-shirt, laid on the floor.

"This will protect you completely from the Dementors. Since it will be safer to remain in the gigai, I gave it some upgrades. The body is nice and light so you won't tire so easily, and the strength should be about half of your real strength," Urahara eyes sparkled as he explained it all to Toushirou.

"Thanks," Hitsugaya said as he stepped into the gigai. It was indeed light, although he probably won't able to shunpo with it but it should be good enough.

"So you're going to London right?" Urahara confirmed.

"Yeah,"

"Well, I got a portal for you. Just let me set it up. It should take and an hour or two," Urahara made his way to the back of his shop where two kids were sitting on the floor playing janken to see who would sweep the front.

"You're doing it wrong, Ururu!" the boy yelled when he lost 3 times in a row, "You gotta sweep now,"

"But-" she was caught off as the boy dug his knuckles on the side of her head and started rotating them quickly.

"Ow! Stop it Jinta!" Ururu whimpered. Toushiro frowned at this and grabbed Jinta's arm, stopping him from further torturing.

"I would stop it if I was you,"

"Who says, shorty!" Jinta replied loudly.

This caused Hitsugaya to grit his teeth.

He grabbed Jinta's collar and lifted him, "What did you call me?" he said narrowing his eyes. Jinta blew a raspberry.

Just then Urahara called from the backroom, "Can you come here for a sec?"

Toushiro gave one last glare to Jinta, who was staring defiantly, and walked towards Urahara's voice.

The backroom was an open light room.

In the middle was a round gate, with cracks and seals around it. Tessai was working on connecting the many wires.

"Ah yes, I just needed to know something," Urahara smiled, "Where exactly did you want to go?"

"Someplace called the 'Leaky Cauldron'," Hitsugaya replied as he stared at the portal.

"Well that was all I needed to know, you can go back to waiting room," Urahara waved Toushiro off.

Toushiro walked back to the room. The girl was alone, and was drinking tea. There was a table in the middle of the room that was not there before. "Would you like some tea?" Ururu asked timidly, as she pointed a hot cup of tea on the table.

"Ah, sure," Hitsugaya hesitated before he sat down and picked up the cup. He looked at the cup suspiciously then he put it down. He could feel the boy from earlier watching him, something was probably in the tea.

"Where are you going?" Ururu asked nervously.

"London,"

"W-why?"

"A mission," Toushiro sighed as he recalled the previous day...

Hitsugaya-taicho was working through the large stack of papers on his desk when he found a strange letter.

It was a thick parchment with a faint ting of yellow.

A red seal closed it with a badger, raven, snake, and lion wrapped around the 'H'.

Hitsugaya carefully opened it and read the letter.

It was a letter of invitation to a school called Hogwarts...a school for wizards.

Toushiro was about to trash the letter, thinking it was another prank by Matsumoto when a hell moth fluttered into the room.

It had said to immediately come to the commander's office with the letter.

Toushiro frowned as he hurried to meet the commander.

When he arrived at the office, he saw that all the captains and lieutenants there.

It was a meeting.

Hitsugaya hurried to his spot and sat down, Matsumoto was already there.

She looked confused, along with the other lieutenants.

Yamamoto-taicho cleared his throat and the sudden meeting started.

The commander told tenth division's captain of the unusual activity of hollows known as dementors at a school for wizards and witches.

Most of the people attending the meeting had a look of surprise on their face, including Toushirou. Yamamoto-taicho ordered Toushiro to go to the school and investigate the matter... as a foreign exchange student.

The supplies would be something that Hitsugaya would have to get himself, the money would be provided by the Society's funds.

It would be a solo mission, that would last about a year, maybe more.

Hitsugaya accepted the mission, and he took the burden of being alone...

"Toushiro-kun!" Urahara called.

The taicho snapped back to the present and he stood up.

Ururu looked at him curiously andJinta watched from under the table.

As Toushiro left the room, Jinta poked his out and sighed, "Tch, how did he know I put laxatives in his tea?"

The portal was finished, but still looked a little unsteady.

"It's done," Urahara declared, smiling.

"Has it been an hour already?" Hitsugaya asked, a little surprised.

"Yes, now all you you have to do is step into the portal. Don't worry it's gigai compatible, and here is your money and some clothes. Although you'll have to get your own wizard robes," Urahara handed a trunk and a small sack to him. Toushiro thanked him,he put everything into the trunk and turned to the portal. Toushiro looked at the machine doubtfully but stepped into it and immediately, he appeared in front of a small, shabby looking pub. Toushiro blinked, stared at the pub and looked around. The city of London was bustling with thousands of people. Yet none of them even gave a glance at the pub, although quite a few were staring at him, and his hair.

"Look at his hair," said a teenage girl said to her friend, "did he dye it?" the other whispered.

Toushiro quickly stepped into the building, not wanting any more attention. Inside was dimly lit, people in dark robes and pointed black hats sat eating dinner. There was a man behind the bar, wiping glasses. He glanced at the white hair child with slight interest before looking away.

"Excuse me," Hitsugaya asked the barkeeper, "Where is 'Diagon Alley?" The barman pointed a door in the back. Hitsugaya nodded and walked toward the door. When he opened it, he came face to face with a brick wall. Toushiro frowned and walked back to the barman. "Sorry, but as you can see, I'm not from around here. Can you help me enter the alley," Hitsugaya remembered that in the letter it mentioned how to get in. But he didn't have a wand at the moment, so it would be quite impossible without the help of a wizard. The man shrugged and pulled out his wand. He approached the brick wall and tapped a couple stones. As the bricks unfolded themselves, Hitsugaya's eyes widened slightly. The alley was crowded with cloaked figures. There were excited children begging their parents for a new broom, people crowding the pet shop and students shopping for their school supplies. Hitsugaya sighed and started browsing the stores. He pulled out the supply list, it had said he'd be in third year so he'd need more advanced materials. The book shop was the closest so he went there first. There were several people in the store picking out textbooks and a large cage filled with growling books, tearing at each other. The shopkeeper walked up to Toushiro and asked nervously, "H-hogwarts?"

"Yes,"

The man swore loudly and pulled on thick gloves and walked over to the cage. Sweating, he gulped loudly and opened the cage. Immediately, the books started going crazy. The man tried to grab one quickly in the chaos, but they all started biting him. Eventually, after many struggles, he wretched one away and and quickly closed the cage. His shirt was torn and his gloves had holes in them.

"What... else... do... need? He panted.

Toushiro handed him the list and waited as the shop keeper quickly found the textbooks on the list.

In a big thump, he dropped them onto the till and ringed them up.

"That will be fifteen galleons, twelve sickles and three knuts,"

Hitsugaya brought the bag of money and looked in confusion. "I'm sorry but I'm not familiar in wizarding money, can you subtract the amount from my bag?" The shop keeper nodded and took out the money and waved goodbye with a weary smile as Toushiro left the store with his brand new books. He put them in his trunk with his bag of money and looked at the list. "I need... robes," Toushiro spotted a shop that displayed robes, and wandered into the shop. Immediately, a plump woman spotted him and ushered him over to a long mirror.

"Hogwarts dear?" the woman asked.

"Yes," Toushiro replied.

"Are you a first year?" she asked as a measuring tape appeared and started measuring his sizes.

"No, I'm a third year," he said as he stared at the floating measuring tape.

"Really? I would have thought i would recognize that white hair," she babbled on as Toushiro remained silent.

"Women sure like to talk," he thought when she finally finished and gave him his robes. She went to the till and told him the amount. Toushiro once again asked a shopkeeper to subtract the amount from the bag. When all he had left to buy was a wand, Toushiro frowned. Although he preferred Hyorinmaru, the wand would have to replace his companion for a while. He felt a little uncomfortable with this but it was unavoidable. He reached the stop and read the sign. Ollivanders: Makers of fine wands since 382 BC. Toushirou stepped into the dusty shop that was quite empty. A old man with shining, pale eyes poked out from behind the endless boxes on the shelves. "Can I help you?" he asked in a soft voice. "I need a wand," Toushiro frowned, the man seemed a little odd. "Ah yes, please hold out your wand hand,"

Toushiro paused before he held out his right hand. He held a sword with his right hand so he supposed it would be the same with a wand. Ollivander measured the arm length and muttered to himself as he looked at some boxes. He pulled one out and opened it, revealing a wooden brown stick. "Willow, 9 inches, unicorn hair, quite supple," Toushiro took the wand but barely held it when it was grabbed out of his hand. "No, no... Ah, Beechwood, 8 inches, phoenix feather, try and wave it," Toushiro waved it, feeling quite idiotic when a light bulb exploded. "That's not it..." Ollivander looked around again, looking quite eager. After going through at least twenty wands, Ollivander went to the very back of the shop. After a couple minutes, he came back with a silvery box. "This something I just made yesterday, a very unusual wand. Oak, ten inches, and made with the heartstring from an ice dragon. I don't usually use such a dragon heartstring but let us give it a wave," he opened the box, and revealed a pure white wand. Toushiro felt a little jolt inside him as he looked at it. When held it, the ice cold touch was soothing. He closed his eyes, he felt something inside him stir and he gave a small wave. When he opened eyes, it was snowing.

"Wonderful! Just wonderful," Ollivander smiled brightly, "It is rare that a recently made wand left my store so early."

Toushiro nodded but he felt a bit strange. Like Hyorinmaru was in the form of a wand.

"Do you happen to know the name of the ice dragon?" Toushiro asked.

"I'm sorry but I don't. A package arrived with the heartstring and it seemed that it was fate. So I immediately made that wand," Ollivander answered wistfully, "that would be 9 galleons. By now, Toushiro had learned the way to count money and he handed the correct amount to the man. When he left the shop, with a wand in his pocket, he... smiled. Just faintly though. Now that he bought everything, he made his way back to the Leaky Cauldron. He walked up to the barman and asked to rent a room for the night.

"Just one moment, Tom!" a pale man with a toothy grin appeared out of nowhere, "Can you show the boy to a free room?" Toushiro frowned at being called a 'boy', but the barkeeper ignored it.

Tom nodded and led Hitsugaya up the a wooden, polished staircase at the door with a bronze 10 on it.

"How long will you be staying for?" Tom asked as he opened the door. "Only a night," Hitsugaya responded, looking around the room. It was moderately simple, with a double bed in a corner and a large wardrobe at the other side. A small mirror hung on the wardrobe door, a there was a fire crackling in the fire place. Toushiro decided to put the fire out as soon as Tom left. The fire made room hotter than Toushiro would like.

"That will be seven galleons sir," Tom said as he stuck out his hand. Hitsugaya dug out his bag of money, only have full now, and gave the amount. "If there is anything you need anything sir, please call," As soon as the door closed, Toushiro opened the window and put out the fire. He sighed as he opened the trunk. He pulled out the picture Hinamori gave him and stared at it. Matsumoto was grinning happily with a sake bottle, Hinamori was smiling gently next to Toushiro who was scowling at Matsumoto. Toushiro felt a pang of home sickness before he shook it off. He changed into plain clothes and turned off the lights. As he dropped onto the bed from sheer tiredness, his thoughts lingered onto trip to Hogwarts that awaited him tomorrow...