A Viking in Japan

MHA background information:

The Premise The World: About 80% of people have superpowers known as "Quirks". It started at first with a baby which glowed, and now, it’s very commonplace. However, discrimination against quirkless people is also commonplace thanks to people believing they can’t do anything without a quirk. The Hero: Izuku Midoriya (Deku) is born completely powerless (Quirkless) in this society. This leaves him bullied and ostracized, especially from his childhood best friend, Bakugo Katsuki. They both went to Aldera, where Izuku was bullied and quiet while Bakugo was arrogant and proud, the school and teachers and classmates praising and supporting the hotheaded student due to his amazing quirk of producing explosions from his hand, despite his attitude. The Turning Point: After Midoriya risks his life to save his childhood rival Katsuki Bakugo, the top hero All Might chooses him as his successor. This includes granting him an amazing quirk called One for All, which acts as a strength enhancer for Izuku as well as giving him access to other quirks much later. The Power: Midoriya inherits All Might's Quirk, One For All, which lets him pass down and stockpile colossal physical strength. School Life and Rising Threats U.A. High School: Midoriya enters the premier hero academy, making friends like Ochaco Uraraka, Tsuyu Asui, and more, and facing strict teachers and intense training trials, all under the tired, exausted guidance of underground hero Eraserhead. The League of Villains: Led by Tomura Shigaraki, a growing criminal underground aims to destroy hero society. However, Shigaraki isn’t the real leader - that would be All for One, All Mights sworn enemy with a quirk of the same name that can take other people’s quirks. There are other enemies too, like the Shie Hassaikai, a part of the Yakuza led by villain Overhaul, who wishes to eradicate all quirks from existence due to being a major germaphobe and believing quirks come from rats. He uses the blood to a traumatized young child named Eri, who can rewind time, people, objects, and more with her quirk and a glowing horn in he side of her head. Escalating War: As the series progresses across multiple seasons and story arcs, skirmishes between students and villains turn into massive, nation-wide conflicts. Etc

HTTYD background information:

The Viking village of Berk is frequently attacked by dragons that steal livestock and endanger the villagers. Hiccup, the 15-year-old son of the village chieftain, Stoick the Vast, is deemed too weak to fight, so he creates mechanical devices under apprenticeship with Gobber, the village blacksmith who is also Stoick's best friend and advisor. Hiccup uses a bolas launcher to shoot down a Night Fury, a rare dragon, during a dragon raid, but nobody believes him. He enters the forest and finds the Night Fury but cannot bring himself to kill the dragon. Instead, he sets the creature free. The Night Fury then suddenly pins Hiccup down, but to Hiccup's surprise, the dragon spares him.

Before leaving with his fleet to find and destroy the dragons' nest, Stoick enrolls Hiccup in a dragon-fighting class with fellow teenagers Fishlegs, Snotlout, twins Ruffnut and Tuffnut, and Astrid, on whom Hiccup has a crush. Facing little success in the class, Hiccup returns to the forest and finds the Night Fury in a cove, unable to fly because Hiccup's bolas tore off half of his tail fin. Hiccup gradually befriends the dragon, naming him "Toothless" after his retractable teeth, and designs a harness and prosthetic fin that allows Toothless to fly with Hiccup riding atop his back.

Learning dragon behavior from Toothless, Hiccup manages to pass the training by subduing the dragons, earning admiration from his peers but sparking suspicion and jealousy from Astrid. Stoick's fleet returns home unsuccessful. When Hiccup learns that he must kill a dragon for his final exam, he tries to run away with Toothless, but Astrid discovers them, and Hiccup takes her on a flight to demonstrate that Toothless is friendly. During the flight, Toothless is hypnotically drawn to the dragons' nest, where an evil gigantic dragon named the Red Death summons relatively smaller dragons to feed it copious amounts of live food from Vikings and natural ecosystems to avoid being eaten themselves. Realizing the dragons have been forced to attack Berk to survive, Astrid wishes to tell the village, but Hiccup advises against it to protect Toothless.

In his final exam, Hiccup faces a captive Monstrous Nightmare and tries to subdue it to prove that dragons can be peaceful. When Stoick unintentionally enrages the dragon into attacking, Toothless arrives to protect Hiccup but is captured. Outraged, Stoick confronts Hiccup until he inadvertently tells him the location of the Dragon's Nest. Thinking Hiccup betrayed the village, Stoick rashly disowns his son for befriending a dragon and prepares the fleet using Toothless as a guide to search and destroy the nest after Hiccup tells him that Toothless brought him to the island. Astrid prompts Hiccup to realize he spared Toothless out of compassion, not weakness. Regaining his confidence, Hiccup shows his new friends how to befriend the training dragons, and they set out after their tribesmen.

Stoick and his Vikings locate and break open the dragons' nest, awakening the giant Red Death, which easily overwhelms them. Hiccup and his friends ride in on the training dragons, distracting the monster. Hiccup attempts to free Toothless, and Stoick, realizing his horrible mistake and his son was telling the truth, rescues and apologizes to both Hiccup and Toothless, telling Hiccup he is proud of him as his son. In a fierce midair battle, Hiccup and Toothless sets the Red Death's mouth ablaze, destroy its wing membranes, causing it to crash fatally and explode. Whilst escaping the resulting explosion, Hiccup gets knocked off Toothless. He is saved by Toothless, but loses his left foot in the process.

Some time later, Hiccup awakens back in Berk and finds dragons frolicking in the village and Gobber having fashioned new prosthetics for him and Toothless. Hiccup is now admired by his village, including Astrid, who at first punches him in the arm for scaring her before kissing him. Berk begins a new era of humans and dragons living in peace.

The present scenario:

(Taking control of Izuku for a moment)

Izuku sighed, rubbing some more burn cream onto his arm and wondering how much money he’ll have left over after buying more cream, as he’s almost out. Bakugo had thought it was fitting to attack Izuku after school for daring to do well in a test, causing him to explode Izukus homework and burn him on his chest and left arm, before kicking him in the face and storming off with a scoff. Izuku had laid there for a while before getting up and wandering home, but finds a nearby museum. Curious, he goes inside after paying the fee, looking around at all the ancient history. It’s amazing to see, especially the dinosaurs, ancient cultures before quirks, and even a new special exhibit here for a limited time, about an ancient race of Vikings who battled dragons. There are lots of unique items on display, like weapons, clothes, dragon scales from different species, everyday items, furniture, and the star piece - a girl, frozen in ice. She seems to be around Izukus age, with old fashioned Viking clothes, and a double sided battle axe in her back. The ice she is in is from a glacier near Scotland, and the temperature is maintained with lots of strong AC units and fans.

However, as Izuku stares at the girl, he suddenly screams in confusion and awe as something shocks him - her eyes, blue and full of life, snap open. She is awake, and alive.

Astrid, instead of referencing God or Jesus or other similar figures when swearing, brings up Thor or Odin or other Norse gods instead. Astrid speaks fluid Norse and Izuku fluid Japanese, but they have common ground over English, which they are both fluent in. Izuku is smart, clever, and great at quirk analysis and analyzing other things he finds facinating or amazing, often dissolving into mutterstorms that other people are impressed by or weirded out by. Astrid is also smart, strong, fast, dangerous, and stubborn at times.