A/N: Hey guys, it's me! After writing a Harry Potter and Sekirei crossover fic, I decided to write a crossover between Harry Potter and Negima! Magister Negi Magi. I think this will be a good one, but I don't know. So, anyway, if you don't like polygamy, harems, and a very strong and a genius Harry, then you shouldn't read this. As it stands, each crossover of Negima involving its own characters takes place in the Negima universe. So will this, but I have plans and Hogwarts might show up for Harry's third year in it.

Harry's harem: Class 3-A with the exception of Asuna Kagurazaka as I don't like her very much. Sorry to all the Asuna fans out there. Anyway, read on!

Disclaimer for all chapters: I don't own Harry Potter or Negima! Magister Negi Magi.

Prologue: The-Boy-Who-Lived

In a house somewhere hidden in Britain, a red haired man with a goofy expression on his face knocks at the door of an old fashioned house with 2 floors. It was literally all black with some blue and the door was one of the only new things in the house's front. The door didn't open, but footsteps were heard on the other side and a female voice, muffled by the door, asked, "Who's there?"

"It's me, the great Nagi Springfield, of course!" was the red haired man's enthusiastic reply.

"Prove it." the female voice challenged. "What was the last thing said by James to you in his last year at your academy?"

"Let's go and bash some evil heads in and have a lot of fun doing it. This is what he said, exactly." The man called Nagi Springfield answered. A pause and the door opened, revealing a red haired woman with a resigned look on her face. "I suppose you're here for James?" she said. "That's right, Lily. If he isn't too busy with young Harry of course. I'd like to meet him as well." he replied. "Oh, alright, come in and shut the door behind you. I'll get Harry. James is not too busy with anything, at the moment." With that, Nagi stepped inside and the woman, Lily, went upstairs to get her son, Harry Potter.

As she went, from the entrance hall, a door opened and a black haired man with circular lens glasses stepped out. He was wearing a green coat over a black shirt and brown trousers. He wore shoes and black socks. He was smiling. This man was James Potter, husband of Lily Evans Potter. He was ready for their weekly night on the town. Nagi had similar attire. They both grinned and gave each other a high five and a hug before getting ready to leave. Lily came down just then with a bundle in her hands.

In this bundle was a baby. He had black hair like his father and was currently sleeping. Nagi reached there and cooed at him. "Isn't he a cutie?" he said, lightly tracing Harry's skin. He turned a little in his sleep and then went back to it. James laughed, "Of course he is. He's one of the best sons a father could wish to have. What about Negi?" "I left him with his mother for today. So, let's go." Nagi replied.

"Well, Lily, I'll be back by 11. If you want to wait, I suggest you don't bother. Oh, and you know the drill…" James spoke with a grin. "Yes, I do. Be back safe, James." Lily said, kissing him and then James and Nagi walked out of the door. Two cracking sounds were heard. She smiled. Those two would never change. 'Oh, well', she thought, 'Better read something near Harry.' She went upstairs.

Time skip (3 hours)

Lily felt an odd tingle as she rocked Harry back to sleep. She realized that it was the runic barriers sensing a hostile presence. But only one. 'Voldemort!' she thought as she tried to find somewhere to hide Harry, only to feel more tingles, which meant the runic barriers were failing as they were being overloaded. She realized the containment field rune had activated, which wouldn't allow Apparation. Also. Voldemort had probably added his own anti-Apparation spell. She couldn't escape as she heard the door being blasted. She went through her choices quickly. She didn't have much time. She decided that the runic trap circle was her only hope. James was called the 'Rune Master' due to his proficiency in runes. Nagi never had as much potential as James and so James was more powerful, despite Nagi's moniker, the "Thousand Master". The trap circle needed a sacrifice and would trap and destroy the body of the attacker of the target. The trap circle placed a trap on the target, which was Harry, such that if the same person tried attacking him who had attacked earlier and was destroyed, then their attacks would fail as the trap was also a full protection.

James had made this as a last resort to protect Harry. He had intended for himself to be the sacrifice. But he wasn't here and Voldemort's powerful barrier would keep him and Nagi out for 2 minutes, which was more than enough time for him to kill them both. James and Nagi would arrive on sensing the barrier's failure but wouldn't make it through Voldemort's barrier in time. So, Lily pushed Harry's crib to the center of the circle (which was well hidden). She prepared herself mentally. She didn't want to die, but she would for her son. She saw the door being blasted open. Voldemort stood. His figure wasn't visible as a black cloak covered his entire form. A hand with a wand stretched out. She immediately cowered in front of him. "No, not Harry! Please don't kill Harry! Take me instead!" she screamed with genuine intent to give her life for her son's.

"Step aside…. step aside, silly girl..." was the only response from the cloaked dark lord. His voice was colder than a winter night. "Please don't kill him! Kill me instead!" She insisted. Voldemort, impatient, knowing that James and Nagi had Apparated and he couldn't fight both without weakening himself severely. He'd still be able to defeat them, but he would be weak. So he raised his wand at her and said, "Avada Kedavra!" A green light burst from his wand and hit Lily at unbelievable speed. She slumped and fell, her eyes lifeless. She was dead. He turned to do the same to Harry. But as he cast the Killing Curse, the runic circle glowed faintly and the curse was reflected on him. The last thing he felt was immense pain and his body was destroyed. Owing to his Horcruxes, his soul stayed tethered, but was extremely weak and had split into one more piece, which entered the baby, causing a scar shaped like a lightning bolt to appear on his forehead. The main part of Voldemort's soul fled, as his body crumbled and his wand fell on his cloak.

Just then, James entered and cried out in horror at seeing Lily dead. He slid to his knees, crying. "No...No. This can't be happening. She's actually dead. As he sobbed, Nagi put a comforting hand on his shoulder. "Looks like your trap worked, James." he said. James looked and saw a cloak with a wand in it. He cheered up slightly, before hearing his son's crying. He wiped the tears from his face. He had to be strong for his son. He would mourn Lily and see to it that she was buried. He growled. "That Peter. I should've known. I'll kill him!" he said angrily. Nagi calmed him down by saying, "As an Auror, you have the right to do so. But we should get Harry some rest and contact Sirius and Dumbledore. They'll handle the publicity. In the meantime, train Harry, as you and I both know that Voldemort isn't permanently dead. At the same time, let him enjoy his childhood." Nagi spoke while clenching his own fist angrily at the death of his friend. At James's nod, they both called Sirius and Dumbledore.

Dumbledore arrived first. James explained the events to him. Dumbledore said, "So, James, you're also sending him there. I had hoped that he would be able to attend Hogwarts…" "He can sir, if he's like me, and graduates early, then he can attend Hogwarts for his third or fourth year. But until then, I'll be sending him there and training him myself. I'm shifting, by the way. This house is no longer safe."

At Dumbledore's nod, James stepped out and greeted Sirius with less enthusiasm, enabling Sirius to know what happened by deduction. He sighed, "Prongs, while I'm not saying Pettigrew shouldn't be punished, don't focus on revenge too much and focus on living your life. That's what Lily would have wanted." James nodded. "Padfoot, you're his godfather, so you're getting the location of our next house. Come visit." He whispered in Sirius's ear and then went to stand with Nagi. Dumbledore came up to them.

"People have already heard rumors and they're calling your son, "The-Boy-Who-Lived". Make sure that he is raised as a normal child and not as a celebrity, or he might become arrogant." James nodded and turned to Nagi. "Well, Nagi, shall we leave? After all, one can't wait forever. Besides, this house will be invaded by Death Eaters soon. There are too many for even us to fight. Besides, Harry's safety is paramount in this." Nagi nodded and they both Apparated. Thus, the fall of Voldemort was announced by Dumbledore.

All over the Wizarding World, people celebrated the defeat of Voldemort by a small bay, who slept in a manor, not knowing that he was famous or that his mother died. He didn't know that he would spend his next few years getting to know his father's friends and one of their children, Negi Springfield. In other words, he didn't know anything much at all. He only knew that he was safe and loved. He smiled in his sleep. James and Nagi smiled by looking at him. "He's going to be one heck of a wizard." Nagi commented. James smiled and nodded. "Yes, he will." Nagi said, "Well, I have to go, but I'll see you at the funeral. When is it?"

"Next week at 8 p.m."

"Goodbye for now, James. Bye, Harry." With that, Nagi Apparated out. James stood up to place runic barriers over the house. He would protect Harry with his life and prepare him for the magical world. So, he would train him to his best ability. With that, a new chapter in Harry Potter's life began.

A/N: Well, guys, this idea has been in my head for quite a while. I haven't abandoned my other story, so don't worry. I'll just have a tighter update schedule, that's all. Well, James is Nagi's friend and Harry will be very strong and a genius. Negi won't go to Mahora Academy. Anyway, read on!