Harry looked around the Room of Requirement with satisfaction. There were two doors on opposite sides of the room from where he was currently standing in the 'Study Room', one led to the rest of Hogwarts while the other led to the classroom he planned to use for the different focused lessons. There were 10 round tables in the study room that could hold up to 12 people for group study and then 12 single tables scattered around the room for a single study. Bookshelves filled to the brim hugged three out of the four walls.

The only wall free was the wall with the classroom door. On the free wall held a notice board, which only has the current study schedule until the first meeting after the Winter Holidays and a list of age restrictions for certain classes, sat to the left of the door. The schedule didn't take long to work out and he made sure to leave an hour on Sundays for any questions and gave the students an hour for lunch both days.

Saturday Schedule:

9:00 am - Herbology (Years 1-7)

10:00 am - Potions (Years 1-7)

11:00 am - Transfiguration (Years 1-7)

12:00 noon - Lunch

1:00 pm - Charms (Years 1-7)

2:00 pm - DADA (Years 1-7)

3:00 pm - Ancient Runes (Years 3-7)

4:00 pm - Arithmancy (Years 3-7)

5:00pm - COMC (Years 3-7)

Sunday Schedule:

9:00 am - Martial Arts (Years 1-7)

10:00 am - Weapons (Years 6-7)

11:00 am - Etiquette (Years 1-7)

12:00 noon - Lunch

1:00 pm - History (Years 1-7)

2:00 pm - Wards (Years 5-7)

3:00 pm - Curse Breaking (Years 6-7)

4:00 pm - Wandless (Years 1-7)

5:00 pm - Office Hour

On the right of the door, about six feet up the wall, was a wheel with four colors on it and a needle pointing at the top to show which one was active. He had seen something similar in a movie trailer in passing when he was tracking down a dark wizard in Japan in his old life. Harry thought it would be a good idea to use it so the other students would know which room they were working with that day. At least the ones that needed the indication. There were 4 colors: Green, Blue, Yellow, and Red.

The Green section of the wheel represents the classroom, which will end up being the main room he uses. The only classes he won't use it for are Martial Arts and Weapons, for obvious reasons. Inside the classroom was a wall of books to the left of the door against the wall, filled with several copies of different books for the students to learn from. Around the room were close to 50 desks for the students to sit at with a cleared section on the opposite side of the room from the door with a chalkboard for Harry to use when he teaches. Some of the classes needed a second room to separate Theory from practical, Potions and DADA mostly. Herbology and COMC didn't have an extra room but he was hoping that the professors would allow them to have 'field trips' to the greenhouses and stables if the students needed it, which was another reason to keep the study group on the weekends only. The rest will be mostly theory-based with the less dangerous practicals.

The Blue section of the wheel represents the potions lab. This is where Harry will mostly be showing them how to prep ingredients for potions and he will have them work in groups if they need to have the class in the lab. He made sure that the lab looked similar to the dungeons so the students had a familiar place to work.

The Yellow represents the Duel room. The duel room will be used for DADA's practicals and Martial Arts' lessons. The entire room was covered in gym mats and cushioning charms to minimize injury. There was also a cupboard in one corner with extra workout clothes for those who don't have any. There were also two more doors in the room, one leading to a girl's locker room and one leading to a boy's locker room. Both Locker rooms had showers and loos for the students. The Red represents the Weapons room. It was a no-brainer for Harry to make the Duel room and the Weapons room into two separate rooms. Not just because they're different age groups, but because he didn't want any of the younger years to be tempted by them. The Weapons room was very similar with the exception of all the weapons hanging from the walls in every available space. Harry made sure to personally check the weapons so they couldn't hurt anyone and would only leave behind bright yellow paint to show the injuries they would've had.

"Dear Merlin!" A voice shouted, interrupting Harry's inspection.

"Cedric?" Harry asked, turning to the other Hufflepuff. "What are you doing here?"

"I wanted to make sure you were okay," the prefect stated. "I noticed you were muttering a lot today and it's just the first day."

"Oh," Harry said, smiling. "Thanks, but I'm fine. I just wanted to make sure everything was ready when I met with most of the staff to talk about the study group."

"With how much work you've put in in only a day, I'd say it's more of a club," Cedric teased.

"It's not a club," Harry deadpans, not amused by the older teen. They stopped their conversation when most of Hogwarts' professors entered the room. The only ones who weren't there were Dumbledore, Trelawney, Madame Hooch, Professor Sinistra, and Professor Burbage. Harry then turned to Cedric to see if he'll stay or return to the Hufflepuff dorm. Cedric answered by sitting at the group table that had two stacks of parchment, the larger of the two stacks had parchment stapled together into Packets. "Alright. Welcome, teachers, to the Room of Requirement. When paced outside three times, it can turn into any room you need. In this case, I've turned it into a Study Room." Harry then proceeds to give everyone a tour, explaining that he might take the students on a 'field trip' to the Greenhouse or stables if the students need help with practicals, before leading them to the table. "These," Harry held up the smaller stack of parchment, "are the schedules for the study groups. Please take one and pass it. As you can see, each lesson is only an hour-long with an hour for lunch. Students are not required to go to every class and have the option to pick and choose as they want. With the way I'll be running most of the classes, it'll be more of a question and answering session. I do, however, have a tendency to rant in my 'Professor Mode', as an old friend liked to call it, and so the hour will probably be used to full capacity. The students will not have homework for me because, as I said before, it is more of a study group than actual classes."

"It sounds like more of a club," Severus said, interrupting Harry.

"It's not a club," Harry said, eyebrow twitching just once as Cedric hides a snicker behind his hand. "A club would require me to either make it a secret club or go to the Headmaster for approval and I'm almost entirely sure that he won't approve of this." Harry held up his hand to stop protests. "I'm not saying Dumbledore is a bad guy," Severus and Remus shared a look that said they believed otherwise, "I'm just saying that he is such a busy man that I'm sure he just forgot to add certain books." Harry then handed out the packets.

"What are these letters in the corner for?" Professor Babbling asked.

"Blood status," Severus answered. "P for Pureblood, WH for Wizard raised Halfbloods, MH for Muggle raised Halfbloods, and M for Muggleborns. These are the supply lists for the first years."

"Correct," Harry answered.

"When did you get those?" Cedric asked.

"Earlier today," Harry said with a shrug. "It's what I was muttering about most of the time. I was worried I wouldn't be able to get enough."

"Where are the supplemental books for the muggleborns and raised?" Remus asked, getting the other professors' attention.

"No wonder they've all been incompetent," Severus growled out before his eyes brightened. "That's part of the reason you want to start this, isn't it? You want to get all of the students caught up to where they're supposed to be."

"Yes. I'm hoping that between this new knowledge on your part and the study group, we'll be able to bring the students up. This might even awaken some hidden patients among the students," Harry explained. "It also allows me to give basic training in classes that Hogwarts doesn't offer that other schools do."

"This is all well and good, but the students think you're a third year," McGonagall said. "How are you going to get them to respect a third-year enough to teach them?"

The staff and Cedric watched in awe as Harry changed from his normal look to an adult-looking man with dark blue hair and with the traditional Black family grey-blue eyes. Harry had borrowed most of the look from Brendan Fraser's Rick O'Connell from the movie 'The Mummy', which he saw in his previous life.

"Oh, splendid!" Flitwick cried with joy. "No wonder you're one of Gringotts' top assets in ABHD!"

"Thank you, Duel Master Flitwick," Harry said before moving on. He pulled out another parchment from his pocket. "I would appreciate it if you all signed this. It basically just says that you've given me permission to tutor the students. If all of you sign and Dumbledore tries to shut the study group down, I can just present this and he won't be able to do anything about it." They all signed, although Hagrid did hesitate for a little bit before he did. Harry then handed each of the Head of Houses a parchment to advertise the new weekend Study Group. Once the last of the professors left, Cedric walked Harry, who was back to looking like himself, back to Hufflepuff domain where the other five prefects were waiting.

"Looks like we've got a study club on the weekends now," Cedric said with a smirk.

"It's not a club!"

Line Break

Harry dyed another rat blue as he exited another branch of the Dungeons Friday evening. It's something he'd been doing between Classwork and pretending to be a student so he could keep up the pretense of looking like he was looking for Pettigrew for the last week. The dye was only temporary and would wear off in a year but until then, the blue dye will allow Harry to not feel the runes' pings whenever the little guys move past them.

"Mr. Mortuus, my office, now," Snape called, walking right past him.

"Yes, sir," Harry answered, following him. The walk to Severus' office was silent. Once they were seated and tea was served, Severus started to talk.

"What did you mean by being raised for the slaughter?" Severus asked. Harry sighed and put up extra privacy charms to ensure Dumbledore couldn't listen in.

"What do you know about Horcruxes?" Harry asked.

"They are soul magic that is considered the darkest of the Dark Arts."

"Yes. They split the user's soul in half in an attempt for Immortality and are created after the user killed someone or something," Harry explained. "By the time the final battle rolled around, Riddle had made 7 Horcruxes and I had destroyed all of the inanimate ones. There was his Diary, Hufflepuff's Cup, Ravenclaw's Diadem, Gaunt's Heir Ring, and Slytherin's Locket."

"That's only five," Severus said after Harry paused for a little bit. "That means two of them were animated, living beings?" Harry nodded and Severus began to pale as realization hit and he stared at the Zaffre headband covering where his scar should be.

"Yes. After his return, Nagini was turned into a Horcrux too. The night my parents died, I became his accidental Horcrux with 1/64 of his soul in my scar. Since I came back, with the Goblins' help I've managed to destroy all of the soul pieces without damaging the containers. Apparently, the Goblins have no problem with studying soul magic."

"He is truly gone?" Severus asked, getting a nod from Harry. "Do you ever plan on telling Lupin and Black about coming back through time?" Harry stayed silent for a little bit before answering.

"Maybe one day, years from now," he said. "I only got to spend a few years with them last time and even then it wasn't consistent. I want the opportunity to spend more time with them and just act like the teenager I never could be with them for a while longer." Severus nodded in understanding before changing the subject a little.

"Why blue hair?" Severus asked, getting a sad smile in return.

"My godson, Remus' son, was a Metamorph like me," Harry said. "He liked blue so he always had blue in his hair. He was five when I died. I don't know if he'll ever be born now, especially with Remus and Sirius flirting all of the time. Like, seriously, just get together already!" Severus nodded, a smirk playing on his lips at the last sentence, and changed the subject again to prevent the teen from dwelling on the darker parts of his past life. They talked a little bit more about Harry's current mission before the teen left his office. It didn't take Harry long to exit the dungeons and start heading to the library to finish his homework.

"Obscurus?" Twin voices said unsurely at the same time. Harry turned around and found the Weasley twins there with the active Marauder's Map.

"Figures," Harry mumbled before waving the twins over and into an empty classroom. Harry put up strong privacy charms before turning to the still shocked twins who still had the map out. The younger teen walked over to them with a smile and took out his wand, pointing it to the map. "Mischief Managed." The map deactivated. "You two can't tell anyone," Harry told them. "Professors Snape and Lupin know who I really am for various reasons and my godfather and the Goblins know but no one else. No one can know who I am. Especially Dumbledore. He actually started to dose me with a mild love potion directed towards your sister towards the end of my first year." The twins looked horrified.

"We'll keep your secret," the twins said at the same time.

"Thank you," Harry said.

"Now, we have," Fred started.

"A question,"

"For you," They ended together.

"You already captured,"

"Peter Pettigrew,"

"Didn't you?"

"Yes. He was hiding as Scabbers," Harry said, making the twins blanch. Harry took down the privacy charm and led the twins out of the room, Fred and George decided to bookend him. "So, are you two planning to go to the study group this weekend?" Harry asked. Harry saw two sixth-year Hufflepuffs who were known for their gossip just up the stairs from them, meaning they'd end up passing them when they made their way to the library.

"Yeah, we want to see if we can," George started this time.

"Get any tips on Runes and Arithmancy,"

"Since we've been doing independent study."

"We also want to try out the Martial Arts,"

"And the Wards, and the Wandless lessons."

"We think Ronnikins needs to

"Take the Etiquette lessons."

Harry nodded, easily keeping up with their twin speak, much to the surprise of the gossips. Then Harry had an interesting idea and mentally smirked.

"Have you heard the rumor that the tutor that's teaching during the Weekend Study Group is an assassin from Gringotts?" Harry asked innocently. The twins looked at each other and then noticed the gossips nearby before grinning and deciding to play along.

"No!" Fred said.

"Tell us more!" George insisted.

"Well, apparently, at least according to rumors, he is the youngest assassin ever and human to boot. Apparently, the Goblins were impressed enough by him to take him in and he finished his apprenticeship in less than a year!" The three looked over their shoulders as they heard loud stomping feet and saw the two Hufflepuffs running off with excited whispers. The three muffled their snickers before continuing on to the library.

Line Break

Harry, in his Blue-haired Rick O'Connell disguise, leaned against one of the group tables at 8:45 am on Saturday, November 6th. Sitting at the table beside him, already studying, was Cedric Diggory.

"Why are you here anyway?" Harry asked. "Your grades are perfect and you're literally just using this time to do homework."

"I wanted to make sure you were going to be okay during the tutoring," Cedric said. "Besides, some of the Prefects volunteered to show up and help all the ones in the Study Room behave while you're teaching. There is going to be at least one from each house at all times so no one plays favorites."

"That was your idea, wasn't it?" Harry asked, smiling at the older teen.

"Perhaps," Cedric answered, returning the smile before frowning. "Although, I think you're only going to have the older years and maybe some of the braver younger ones to tutor this weekend."

"Oh?" Harry questioned, smothering a smirk before it could show up.

"Yeah, apparently Hayes and Anderson heard you talking to the Weasley twins about the tutor being an assassin." Harry refused to look at the other teen and bit the inside of his cheek to stop from grinning. "Anak?"

"I might have seen the two as we were passing and the twins are infectious," Harry relented with a grin, earning a snort from Cedric. "So, from what I've heard and witnessed, how much do you want to bet that Malfoy will come in tomorrow and demand to be in one of the upper-year lessons?"

"When you deny him, he's probably going to tell his father and get your group shut down," Cedric said with a sigh.

"Not unless even the other Slytherins protest against Malfoy."

"And how are you going to do that?"

"By treating them equally to the other students and answering as many of their questions as I answer other house questions. By treating them like actual human children rather than trainee Death Eaters. With any luck, I might be able to lessen the rivalry between Gryffindor and Slytherin so it's not a near-constant war between the two," Harry explained.

"You really think that'll be enough?" Cedric asked, raising an eyebrow.

"I hope so. It was usually enough for me," Harry said, reminiscing his past life before shaking his head to clear it. He waved his hand and called up the time. 8:58 am.

With a wave of his hand, the door leading to the hallway opened and would stay open during the Study Period. The first to enter was the other three prefects followed by several of the older years and then some of the younger years. Harry smiled at them as they took in the room with awe. He waited until everyone was in the room before speaking, getting everyone's attention. Harry also noticed a disillusioned Severus Snape and Remus Lupin sneaking into the room to watch him.

"Welcome, everyone!" He greeted. "This room is going to act as a sort of Common Room for the study. Here you will have access to just about any school appropriate book. However, keep in mind that these books cannot leave this room. Literally. Lady Hogwarts won't allow them to leave and if you attempt to take them they will just pop right back on the shelf. Around the room, you'll see two different types of tables.

"For those who want to study in groups between lessons or in general, then there are the large tables here." Harry tapped the table he was leaning on. "For those who want to study by themselves, there are the single tables." Harry pointed to the nearest single table, which was still large enough for them to spread their work out if needed.

"For the Single tables, there is a rune on the corner of each table that will activate a sound barrier so you can have silence while you work, if that's what you want. Now, if you'll all follow me this way please." Harry got up and moved to the back where the classroom door was.

"This is the notice board," Harry said, gesturing to said board. "It will have the schedule for all lessons. Keep in mind that during Hogsmead weekends, the lessons will be a little lighter so that those who go to Hogsmead can come by at any time. On those days, I will probably open the study earlier so those going to Hogsmead can ask their questions before they leave. Either that, or I might turn those days into a free-for-all study where I'll sit at a group table and anyone can come by and ask for help.

"Finally, we have the door and wheel. The cheat sheet for the wheel is posted on the notice board in case you forget what eat color stands for," Harry explained. "Most of the time it will be on Green which will be the classroom setting. Blue is the potions lab, Yellow the Dueling room for DADA and Martial Arts, and Red for the Weapons Dueling room. Keep in mind that if there is no one in the room, it will automatically revert to the classroom for the protection of all students. Also, Lady Hogwarts knows the schedule for the lessons and has warded the door appropriately. Meaning, unless you meet the age requirement as stipulated on the board next to each lesson, then you are not getting in. Those age requirements are for the safety of the younger students who either aren't responsible enough or haven't developed their magic enough for that sort of magic." Harry looked around and noticed that everyone, including the two hidden professors, had their full attention on him.

"Now, any questions?" Harry asked, having finished the tour. Several people raised their hands but Harry chose a first-year Slytherin girl that Harry remembered was the younger Greengrass sister. "Go ahead."

"Are you really an assassin?" She asked.

"Yes I am," Harry answered. "But I don't just work as an assassin. I also work as an inventor, turning Muggle items into wizarding items to make home living easier. How many here have a Mirror communicator?" Harry held up his own Mirror. Roughly half raised their hands, most of which were Slytherins. "Those are one of the things I created. I didn't create the Two-Way Mirror, but by combining a Two-Way and several different ideas from muggle devices the most recent line of Mirrors are out there." The students oohed at that. "Any more questions?" Harry picked a fifth-year Gryffindor boy next.

"How many people have you killed?" He asked.

"Ah, I'm afraid most cases are classified," Harry answered. "Just know it's more than what you'd be comfortable with probably."

"Wicked!" Several boys said.

"Any more Questions?" No one raised their hands. Harry opened the door to the classroom with a wave of his hand. "Alright, everyone here for an Herbology lesson, go ahead and take a seat. Please allow the younger students to sit towards the front, they are shorter than you older students. Everyone else, feel free to study and look around." Harry noticed both professors sneaking their way into his class. "Prefects that are monitoring the Study Room while I'm in lessons, please make your way over here for a moment." Everyone moved in different directions. Most went into the classroom while a handful went to look at the bookshelves. Cedric Diggory, Marcus Flint, a Ravenclaw he didn't recognize, and Percy Weasley stood before him.

"Firstly," Harry started, "I'd like to thank you all for monitoring the other students during the lessons. Secondly, do you all mind giving a tour of the room like what I just did to any newcomers?"

"Not a problem," Percy and Cedric said at the same time Marcus and the Ravenclaw nodded.

"Thank you," Harry said before heading into the classroom.

"Have fun with your club!" Cedric teased.

"Not a club!" Harry shouted back as he closed the classroom door. This weekend was going to be more of an introductory for all of the lessons since everything was new.