On one fateful day, a newborn in China was born with the capability to glow. This gift was known as a quirk. Since that day, kids ages 4-5 were given quirks. They kept growing until 80% of the world had these powers. Unfortunately, 20% were dubbed 'quirkless'. Normally, the story follows a young boy, who is quirkless, then obtains a quirk from the #1 hero. But what if the story changed? What if the boy was born with a quirk that made people dread him? Enter Izuku 'Deku' midoriya. His quirk? Werewolf, the warrior of the night.

"Kacchan! if you don't stop hurting him I'll... I'll... I'll stop you myself!" Izuku cried to his childhood companion.

"And how do you expect to do that? You're quirkless. there's no way you can compete with me!" The kid cried. With blond hair, blood-red eyes, and an explosive personality with the quirk to match, Katsuki 'kacchan'(as dubbed by Izuku) Bakugou responded. He and his two lackeys were in the process of beating a kid up. They didn't care because he couldn't fight back.

"I'll just fight you back!" Izuku cried. As if the words awakened something inside him, he changed. Fur started to grow from his body, shredding his clothes. When the transformation was done, his entire body was encased in silver-gray fur. Black padding coated his palms and soles of his feet, silver, two-inch white claws growing from every finger and toe. His usual green eyes were replaced with cat-like yellow ones. A single, tall, black thin oval was in the center. All of it was topped off with two black, cat-like ears. They were, like the rest of his body, covered in silver fur, and the centers were pink. Add on a wolf's nose and 3 whiskers on each cheek, and you have a pretty good description of he looks.

Izuku could only look at the bullies shocked faces. 'If this was a quirk, it would've shown up last year. Then again, some kids got their quirk around a month ago, so I shouldn't be surprised. Based on my look, I'm like a wolf but with cat-like whiskers, eyes, and ears. About that, where are my human ones? Ah, never mind, I'll need to see what I can do.'

He thought as kacchan and the 2 lackeys ran at him.

By the end of the fight(, you couldn't really tell. The explosions didn't do much except burn some of the furs off, but they grew back after a second or two.) Izuku had learned many aspects of this new transformation quirk. 1. The whole look. 2. The fur, padding, and claws were strong. One swipe had caused a bleeding scratch on one of the lackey's arms. The fur and padding hardened against impact. One of the lackeys even said that it felt like punching steel. 3. His senses and speed were multiplied by at least 5 times. Izuku felt as if he could hear and see anything within 50 meters of him. He could also hear high frequencies that only dogs could (hence dogs being related to wolves.) hear, like dog whistles.

He also found weaknesses. The furs couldn't withstand extreme heat (that much was obvious from kacchan's explosions.) or cold. His hearing and eyes were so good that any shiny (and I mean silver, gold, or anything metallic and well-polished) thing or loud noise hurt. And, the most embarrassing one which he found out after going home, was that the furs destroyed his clothes, effectively leaving him on full display.

His mom immediately freaked out when seeing a humanoid-wolf-cat thing at her door, which immediately turned into tears of joy after Izuku turned back to normal, into rushing for clothes. Less than 2 minutes later, they were on there the way to the quirk doctor. All of Izuku's previous theories were proven correct. Albeit one change: when it was sunset, and if Izuku looked at the moon after sunset, he would change into his wolf form with no way to change back until sunrise. They decided to call his quirk werewolf. Unlike other transformation quirks, he could be in his wolf state as long as he wanted(thankfully, his family jewels were covered and hidden with his fur).

Then came dealing with kacchan. Surprisingly, kacchan said he would stop bullying Izuku on one term: if he could call him, instead of Deku, Ōkami, or Japanese for the wolf. And to also stop calling him kacchan(sorry, but the author calls you whatever I want.) Izuku gladly accepted.

So there you have it! The first sighting of the full moon hero: okami!

This is my first attempt at making a BNHA fanfic, so I hope you like it! Depending on the reviews and views in total, I'll continue. But the first 5 chapters are happening whether you like it or not! (please like it.)