"After building me, the founders saw an overflow of magical children to the school and reconstructed it to a Castle. During their last touches, they created an unbiased sorter, Griff, to sort children to the House which suits their traits the best. After that, Helga wanted to do something as she know everyone had one thing or another left as a legacy of them not counting their respective artefacts." Harry understood what she was saying as he knew of 3 items in all 4. Salazar's Chamber of Secrets, Rowena's room on the 7th floor and Godric's sword.
"So Helena decided to add 'life' to the building?" Asked Harry.
"Yes, my Lord. Helga was soft and kind and wanted the children of Hogwarts to experience that. But as magical paintings were not in existence by then and she can't stay forever, she took Salazar's help to perform a ritual that watches over children like her, if she was alive now.
As the founders had a great vision to make Hogwarts stand for centuries to come, instead of fully conscious, they made me semi-conscious. But this has a side effect.
Most of my powers were taken by Peeves, the poltergeist, I think you know of him, my Lord," said Hogwarts in an abashed tone.
"Oh. So that's why that trouble maker has such abilities."
"Yes. He is here from the beginning. He has the opposite traits of me. I can only be heard by you because of the Slytherin Lord ring you have," she said. Harry saw his Lord ring appear on his finger.
"So what else can I do with this apart from entering common rooms without passwords?" He asked curiously.
"You can go anywhere in Hogwarts undetected, know where anyone is and bypass some wards. I don't know anything more about it. I think the founders might have something about them," said Hogwarts and Harry was delighted to hear that.
To go undetected means even Dumbledore won't be aware of where he was even with the help of portraits and to know where everyone is something amazed Harry.
"Is there anything I need to know?"
"No, my Lord." Concluded the castle.
"If there is anything I can do, don't hesitate to tell me," said Harry and he felt the castle nod. He came back from his mindscape and relaxed for some time and continued his studies awaiting the upcoming classes.
Harry completed all the practical subjects like Charms, Transfiguration and DADA of his year with all the spells and their wand movements and incantations learnt.
He thought to go through theory subjects like Potions, History of Magic, Herbology and other electives like Astronomy, Arithmancy, Ancient Runes and Care for Magical Creatures.
Though the subjects are new for him, Harry understood a lot about them in his mothers' diaries as she took all subjects except Divination like how he did.
Divination is a subject he is going to self-study as he had a feeling that he would do better that way. He had a bad feeling about Professor Sybill Trelawny as she is the one who told the Prophecy of him and Voldemort.
Thinking of the Prophecy he took out the glowing blue org and heard the prophecy again. He saw Trylawny's face in it facing Dumbledore.
'The one with the power to vanquish the Dark Lord approaches... born to those who have thrice defied him, born as the seventh month dies... and the Dark Lord will mark him as his equal, but he will have power the Dark Lord knows not... and either must die at the hand of the other for neither can live while the other survives... the one with the power to vanquish the Dark Lord will be born as the seventh month dies...'
Firstly, there was a mention of his birthday, which is on 31st July. End of the seventh month. And another thought came to Harry when he thought about birthdays. Neville's is on the 30th of July. Which means he could also be the Boy Who Lived.
But Harry didn't wish his fate on Neville. He couldn't help but think of him as a brother as they both tragically lost their parents. He want to help him in some way and he decided to do it.
There was no specification between him and Neville and Voldemort's choice of him made him the one who defeated him, thus enacting the prophecy. 'That idiot. That's why dad said maybe Voldemort believes in them,' thought Harry.
He traced the lines of his faded scar, reminiscing the sacrifice his mother made. When the dementor came close to him on the train, he knew it was his mother's scream. He was sure of it. He heard her scream and pleading for leaving him alive to Voldemort. Yet, the same memory saved him by giving him the feeling of his mother which he felt through her wand.
He is going to give meaning to her noble sacrifice. He touched his mother's wand to get the same feeling.
He was over the moon when he saw his Patronus. A Doe. The same as his mother's. The protection she gave him with her life, taking shape as his guardian. His happiness faded when a detail he missed came to his mind.