(Summary: In this unusual crossover fanfic of Thor (Marvel) and Harry Potter, there is no Shield or HYDRA, the Avengers are all students at Hogwarts (to be added into the story later) and Loki never fell from the bifrost or fought with Thor on the rainbow bridge. Instead Loki made peace with his identity and worked out his issues with his adoptive family for the most part. However, Thor never came back from his banishment to Earth. In fact Thor wound up in England instead of New Mexico, but he was deaged and had his memory blocked by Earth magic, turning him into a baby with no memory of who he really was. He was found as a baby by the Potters that same day and raised as Harry's adoptive brother. All the events of Harry Potter happened with Thor included into the events at Harry's side, but then fourth year happened. During the fight with Voldemort in the graveyard Thor's memory is returned when he suddenly finds and regains control of Mjolnir. Thor then returns to Asgard fresh from a fight and injured and reeling from several rounds of the cruciatus curse after accidentally turning his hammer into a portkey and faints right at Loki's feet. What will Loki do when Thor reappears in his life after being supposedly dead for fifteen years begging for his assistance in the upcoming war with the crazed dark lord? Why, do everything in his power to help and protect his brother of course! What else were you expecting?

Disclaimer: I don't own anything having to do with Harry Potter of Marvel)

I have not forgotten you brother- Ch 1.

Approximately 15 years ago:

"Thor, you are hereby banished until you learn your lesson! I CAST YOU OUT!"

"Father NO! LOKI! LOKI I'M SORRY!"

"THOR NO! THOR COME BACK! Father please reconsider this! We were only trying to seek answers when the situation escalated out of control!"

"Your brother nearly rekindled a war with his actions! He needs to face the consequences for what he has done!

"Where am I!? Who are you!? Is... is that a magic wand!? WAIT WHAT ARE YOU DOING!? NO STOP! I DEMAND THAT YOU- AHHHH!"

"James! James oh my goodness it's a baby!"

"Lily don't strain yourself! You just gave birth two hours ago! You should be careful! Oh my goodness it actually is a baby!"

"Who in their right mind would just leave a defenseless baby outside like this!"

"I know right? I couldn't imagine doing something like this to Harry. Lily I wish we could go home but we need to bring this baby to the authorities for his own safety. "

"You're right James. Don't fear little one. We'll save you from being abandoned in the night."

"You said he's magical?"

"Yes. Even though he's clearly only a few hours old, during his examination the boy was able to produce as small amount of magical lighting. I don't think I've seen an ability quite like it before. Well no one can find any living family members for this kid, so we're assuming he's either an abandoned muggleborn child or his family dies, probably because of you know who. Another orphan to place... it's tragic really."

"No wait! James... I don't think I can just let him go."

"I don't think I can either. Does this mean what I think it means?"

"Yes James. I'm saying I want to adopt him by blood. It looks like Sirius is going to have two godsons! And Harry, it looks like you're going to have a brother! How does that sound my love?"

"James, Lily! They're both beautiful! I love them already! Hello my godsons!"

"We already knew of Harry's name, but what have you decided to call this little one?"

"James is a bit of a history and mythology nerd, so we decided to base his name of of that. The lightning he made shows that he has real power, and we want to give him the confidence to conquer any obstacles he'll face. His name is Thorian Alexander Potter. We can use Thor as his nickname if he wants."

"Oh Lily, it sounds PERFECT!"

Present Day, Fifteen years later:

"Thor! Harry! I think the cup was a port key! It transported us here!"

"Harry where are we Brother?

"I don't know. Some kind of graveyard I think. What's with this odd hammer thing?"

"Not sure, but there's something... familiar about it. I think it might be magic, but why do I feel as if I've actually encountered this magic before?"

"Oh no. We need to get out of here! NOW!"

"CRUCIO!"

"HARRY NO STOP IT VOLDEMORT! DON'T HURT MY BROTHER! IF YOU'RE GOING TO TORTURE SOMEONE TORTURE ME IN HIS PLACE! IM THE MUDBLOOD HERE! YOU HAVE MORE OF A REASON TO HATE ME THAN YOU DO HARRY! HIS BLOOD WAS ALWAYS AT LEAST HALF TRUE! NO ONE KNOWS WHERE MY BLOOD IS FROM!"

"If you truly insist Thorian Potter, then I shall oblige you! CRUCIO!"

"AHHHHHH!"

"CRUCIO! CRUCIO! CRUCIO!

"GAHHHHHHHH!"

"THOR! HOLD ON! TOM! SPARE THOR AND FIGHT ME IN A DUEL!"

"N-Not without me Harry!"

"Thor no! Stay down!"

"I can't Harry! Not anymore! Voldemort has already stolen too many innocents. He needs to learn that no one is above the rest of the people in this world. We are no superior to anyone. All of us are equals, and those who want to use their abilities for good need to be protected, no matter WHAT their blood may say about it! I WILL FIGHT TO PROTECT WHAT IS GOOD AND RIGHT, EVEN IF I HAVE TO DIE FOR IT!"

"Hey! What's going on with the hammer thing over there!? Where are those clouds coming from!?"

"It, it's flying into his hand! And there's lightning!"

"Hey, why is he so quiet?"

"SPEAK THORIAN POTTER!"

"You're not the boss of me Riddle! Also, you don't have the right to call me that Voldemort. For you, it's THOR! I remember who I am now, And you just screwed up big time. Harry, let's do this!"

"Ok!"

A clash of wands. A battle in the graveyard. Two wands against one, a surge of magic lightning from a mystical hammer at the same time. Harry accidentally escaping through the portkey with Cedric's body, but without Thor. An onslot of Crucio after Crucio after CRUCIO. As these things occurred Thor remembered everything that had occurred.

His brother Loki Odinson had accidentally discovered that he wasn't Asgardian by birth. He was actually a Jotun, a frost giant. Thor, instead of condemning Loki for his identity, had declared that Loki had been wronged when his true identity was kept secret. He still loved his brother whether he was adopted or not. Enraged on Loki's behalf when he found out his brother had been abandoned in a frozen temple by his biological parents, Thor dragged his friends and Loki to Jotenheim to confront Loki's biological father. There was a battle, some frost giants...died... and Thor was banished to Midgard, or Earth, as punishment for violating the piece treaty between the two realms. Shortly after he arrived, he encountered Lord Voldemort's death Eaters. By some twist of fate, the death Eater's magic not only blocked out the Asgardian prince's entire memory, but had also deaged him, leaving him as a baby with a human aging rate. In Thor's mind he recognized that the dealing spell would wear off once he reached the physical age of comparison that he was at when the spell had been cast on him. Thor had been found by James and Lily Potter, who had adopted him as their own and declared him to be their son through a blood adoption spell. Thor was a son of the Potter family, along with his adoptive brother Harry Potter. Of course not long after that Voldemort killed the Potters, except for Thor and Harry. The Sirius was framed for murder and sent to Azkaban, so the Potter brothers were sent off to live with the Dursley's. The Dursley's were terrible caretakers, lying to, neglecting, and abusing the two brothers and even locking them in the cupboard under the stairs to sleep in. The only really truth the brothers grew up knowing wa s that Thor was adopted after being found either lost or abandoned as a newborn. That didn't matter to the Potter brothers. They loved each other anyway.

The two of them being sent to Hogwarts was a blessing in that Thor and Harry could learn magic and make friends, but it also pitted them against Voldemort a few times already, including tonight. They had been competing in the last event of the Triwizard tournament (which NEITHER of them had even originally WANTED to enter but were made to compete in anyway) when Cedric was killed, they were captured, Voldemort used their blood in a revival ritual, the death eaters had been summoned, and then they were forced into a VERY unfair duel against the self proclaimed dark lord, who had set the cruciatus on Thor more than once. Thor wasn't sure how he was able to endure all that pain. Suddenly when he declared to Harry that he was going to fight for what was right even if it cost him his life, Mjolnir, which he had forgotten the existence of, declared him worthy of wielding it again by flying to Thor's hand. When that happened the memory blocking spell was broken and over 1000 years of memories were returned to him. After that the fight had continued, then Harry had left and in his pain all he could think was "I wish I could see Loki again. I hope he's safe in Asgard. Maybe he can help me defeat Voldemort, or at least end this pain! How I wish I could do Loki's brand of magic. Wait a minute, his banishment was over! Now he could just go back to Asgard, find his brother, and just ask him to teach it to him! Yes that was a totally logical and definitely not pain induced plan of attack that was beneficial for this moment... ok no it wasn't. Thor didn't have a clue how he didn't, but right after that thought that mid Crucio episode there was a flash of light and suddenly Mjolnir was magically dragging him across space. A moment after that he was suddenly face planting to the floor... in Asgard's palace library... directly... in front... of LOKI. Thor's last hazy thought before fully fainting from the pain of the left over crusiatus curse's magic was that he wanted to know why Loki was shouting in a library. The pain was mercifully not felt anymore once the world went dark.

Of all the things Loki expected to happen to him that evening in Asgard's palace library, witnessing a random stranger appearing by magic in a flash of light and collapsing to the ground at his feet in a dead faint was definitely NOT on that list. The dark haired mage was understandably confused about this and decided to try to get some answers, so he addressed they stranger in a loud voice.

"What in the-!? Who the he11 are you!?" Loki realized that whoever it was seemed to be unresponsive. The young prince walked around to the other side to get a better view of the unconscious heap at his feet. Loki couldn't believe his eyes once he actually looked at the person's face. This was NOT a random stranger.

No way! It just couldn't be! Could that possibly be THOR!? He was alive!? But how!? Why did he only return now!? Why did he just collapse like that!? Wait a minute... WHY ISN'T HE GETTING BACK UP AGAIN!? Loki gaped and rushed to his miraculously returned brother's side.

"THOR!? THOR IS THAT YOU!? WHAT HAPPENED!? ARE YOU OK!?" Loki managed to roll Thor onto his back. Loki now saw Mjölnir laying on the ground at his brother's side. It must have been hidden by Thor's rather odd looking clothes. Thor was panting and convulsing wildly. He seemed to be in intense pain and Loki has no idea what to do. In fact he had no idea how Thor was here when he had supposedly died fifteen years ago or why Thor looked several centuries younger then he was supposed to be, but Loki decided that now wasn't the time to contemplate that. He had to help his brother! Despite the convulsions Loki knew that his brother needed immediate medical help and had no choice but to move him. The younger prince hoisted Thor over his shoulder and used magic to transport them to the healing wing of the palace. Loki somehow managed to haul Thor like a sack of potatoes all the way to the healer's rooms where he immediately shouted for help.

"EIR! EIR I NEED YOUR HELP! THIS IS AN EMERGENCY!" Eir walked in with an annoyed look on her face.

"Loki if this is another prank- OH MY GOODNESS IS THAT WHO I THINK IT IS!?" Loki's knees were shaking from Thor's weight as well as his own worry and fear.

"YES BUT NOW IS NOT THE TIME TO GAWK ABOUT IT! SOMETHING'S WRONG WITH HIM!" Eir snatched a pillow and placed it on the closest examination table.

"GET HIM ON THE TABLE!" Loki immediately slid Thor onto the table as carefully as possible and morphed his brother's clothing into something more practical for a medical examination.

"I don't know what happened! I was in the library when suddenly there was a flash of light and he just appeared out of nowhere with Mjolnir in hand convulsing like this! It's like he used magic or something!" Eir suddenly realized something.

"Magic... Loki help me scan him for foreign magic!" Loki and Eir immediately went to work only to find the leftover magic of a horrific curse that was assaulting Thor's nervous system. Loki wanted to be sick.

"Wh-What IS this!? Is this some kind of insane torture curse!? Eir it's attacking his nerves!" Eir looked almost completely unfazed as she responded.

"Calm down Loki. The original source of the curse doesn't appear to be actively influencing him anymore. This is just residual magic leftover from whatever spell was actually cast. It can't get any stronger than this, but it looks like he was under whatever this is for awhile. We need to remove the residual magic and check for nerve damage. I think I have a potion that can help with this. I'll get the potion while you start working on a spell."

"Alright!" Loki began letting his magic flow through Thor. He had never seen anything like this vile spell in all his life so the removal process was slow going. He was terrified that Thor wouldn't survive despite the fact that he didn't seem to actually be dying. "Come on brother! Don't let yourself be defeated by this! You're strong! You can take it! It'll be over soon!" Thor simply continued to shudder and twitch. Loki guessed that he was only half conscious at the moment if not completely out cold. Loki figured that was for the best. It might be easier to release the magic if Thor wasn't able to struggle against them. Eir soon came back with the potion.

"We need to get this into him soon but he needs to stop seizing for that! How's that spell coming?" Loki growled in frustration.

"Whatever this was is strong Eir! I'm gonna need backup here!" Eir and Loki worked for twenty minutes straight to remove as much of the harmful magic as possible by filtering it out with their own healing energy. Soon Thor was still enough to drink the potion that would calm and repair any nerve damage caused by the curse spell. Loki and Eir had to hold him up and massage Thor's throat to help the elder prince swallow it down, but he eventually consumed the entire dosage. Eir sighed in relief.

"He shouldn't have any permanent damage to his mind or nervous system if he continues to drink the potion once every few hours for the next couple of days." Loki was holding Thor's hands to check for signs of any more tremors and read his pulse on his wrist.

"Are you sure? In our rush we basically did the equivalent of a magical battle field patch up procedure. What if we missed something?" Eir recorded Thor's pulse when Loki reported it.

"We did the best we could with what we know. We can always reexamine Thor later but right now we need to check for any possible illnesses or injuries that must be immediately addressed. For all we know that curse could have exasperated something." Loki immediately joined Eir in doing a magical injury scan. They mostly found minor injuries, things that would indicate that he was recently in an accident or got involved in some sort of fight. The curse made the evidence point towards the latter option. They wanted to do an in depth scan of his head because Eir thought she sensed strange magic there around the odd little lightning bolt scar she discovered, but decided it could wait as long as Thor didn't appear to have any internal damage to his brain and skull. The most disturbing thing they found was the slash mark on his arm that appeared to have been purposefully caused by a knife of some sort. This is how they discovered that Thor was wearing a wand holster with a wand inside of it on that hand. Eir decided that they should probably leave the wand within reaching distance of both Thor and whoever else was with him by placing it on the side table next to the bed in the recovery room they wanted to move him to when his treatment was done. Eir and Loki discovered that for some unknown reason Thor was significantly thinner and weaker than he should be when comparing his figure to his height. It was Loki who figured out that Thor was underweight and had a shockingly bad case of malnutrition that went back several years but had recently began improving somewhat. Eir would be able to prescribe a potion to help with that later on though. Once Eir and Loki treated every fresh injury they could find they hoisted Thor onto a gurney so they could carry him to bed with as little magic exposure as possible. They hoisted him up once more to put him in bed before Eir said that she didn't want any more magic used on Thor until he actually woke up. Eir didn't want Thor's natural healing abilities to be hindered by magical overload before conducting a full in depth examination of his health. Eir pulled the blankets up over Thor so he wouldn't get cold and then said she was leaving to fill out her paperwork for this incident. Now that the danger and drama had passed, Loki was finally able to sit down and get his own rest. As he plopped down in a chair next to Thor's bedside he released a sigh of relief. Immediately after that the reality of the situation crashed down upon him instantly.

Thor was alive. The crown prince of Asgard had returned. He was currently injured and unconscious and looked weirdly younger then he should be, but that didn't change the fact that Thor was alive and laying right in front of him. Not only that but Thor had arrived with his hammer so that meant his banishment was considered over. He was free to declare that he had arrived. Loki's sibling lived. His big brother had come home with his heart still beating. Loki had gotten his brother back again.

As these thoughts ran through his head Loki cautiously reached his hand out and placed it over Thor's chest. He could feel the steady rise and fall of Thor's breathing under his palm confirming that Thor still held life. The younger prince smiled. After all of the pain and heartbreak that Thor's disappearance had caused for his family and his kingdom, Thor had suddenly reappeared back in their lives. Loki thought he would be angry at Thor for being gone so long, but honestly he was just relieved that he was ok after the horrifying entrance he had made. He was also so very happy that Thor was alive and back in the safety of his own home again. Loki smiled and let tears of joy roll down his face.

"Thor... my brother... you came back to me! You actually came back to me! You're alive! I can hardly believe this is real! Now we have a chance to fix everything between us that I damaged all those years ago! We can start over and repair our lives together if that's what you want! I...I desperately hope that's what you want, because I want that more than anything else in the world! How I wish you would wake up soon so that I can ease all your troubles and repent for all of my mistakes! I promise that this time I'll do right by you Thor! I'll be honest about things that I feel are important! I'll train with you so that you can rebuild your strength every day if you wish! I'll tell you about everything I've learned and work to prove to you that even though I'm a Jotun, you can trust me now! If you say that you still want me even once more then I'll never doubt your love and loyalty ever again! I'll help you heal every sickness and wound you may bare until you're healthy and strong again no matter how long it takes! And most importantly, from now on I will always protect you. I'll keep you safe from harm until the end of my days! No one will ever hurt you again so long as I'm here with you! I love you brother, and now that you're here I won't risk loosing you EVER again!" Loki gripped Thor's shirt in his fist. "I'll stay by your side as long as you wish me to Thor. I don't know if you've been alone all these years, but if you were then know that you're not alone anymore, and you never will be again, because I'm here for you now, just as I should have been before this whole mess began. I won't abandon you brother. You never deserved to be abandoned in the first place." Loki sniffled and frowned as tears rolled down his face.

"I hate to see you suffer like this Thor! I'll find whoever did this to you brother! I'll make them PAY for hurting you with that horrible curse! And after that I'll personally make sure that you're healed back to your full strength! I promise you'll be better soon!" Loki then allowed himself to cry for over an hour until all of his pent up anger and regret and sadness had been drained out of him along with his tears. Once he calmed down again Loki drank a glass of water and began to create a few solid plans. He decided to talk about them to Thor despite believing that his brother was actually asleep and couldn't hear him.

"Alright brother. We need to figure out what to do now that you've basically returned from the dead yes? I know I probably can't do much without asking you what you want, but there are some things we can do for now. First we have to wait for you to wake up and get you some medicine and food and make sure that you're truly ok now. This includes figuring out how you acquired that terrible curse no matter how much you may not like that. Once that's done I think we need to figure out what exactly happened to you the day you vanished from Heimdall's sight. This can help us to sort out if we need to make any specific plans based on ensuring your immediate protection and safety. Who knows if whoever or whatever caused your absence will try to threaten you again? If we can do that then the next step is... oh. We have to actually tell people that you're here don't we? Well I suppose that we should start with Mother and Father and then we can work from there if you want to let anyone else know. After that we can discuss any further official plans with them... unless there's something that you already know you need me to do? It is a little strange how you managed to just make yourself appear right in front of me like that. It's almost as if wherever I was happened to be your specific destination. I would certainly love to find out how you did it so I can do it myself." Loki smirked.

"I never thought I'd see the day when you would be utilizing magic brother. It makes me want to find out about it even more than I thought I wanted to before! So hurry and wake up so we can talk yes?" Thor remained asleep. Loki sighed.

"Being stubborn are we? I suppose that makes sense. You must be exhausted after whatever terrible ordeal you went through before you came here. You need your rest. Until then, I'm going to find a way to drag your hammer over to- what in the!? How did this get here!?" Loki had turned his head only to find that Mjolnir was already leaning against the side of the nightstand right next to him. Loki looked back at Thor in awe.

"Did you do that Thor? Oh brother, you will never cease to amaze me." Loki smiled and decided to fold his arms over the edge of the bed so he could rest his head on them. A few minutes later Loki too was fast asleep.