Chapter 1: The Start
Long ago both humans and merfolk alike lived in fear of the King of the Sea Beasts, the titan serpent All for One. All for One and the creatures under his rule had an endless hunger for power and sustenance. Fallow or be eaten was the of the land and sea. Humans were treated as cattle to be eaten for their flesh and rich mana core. All the while merfolk were treated as slaves, or basic foot soldiers; to be eaten if they fail at either.
Until one day a rebellion rose up against All for One and his Nightmares of the Deep. Heros to end their suffering of many. One human stood as their leader, All Might, who united Mer and human alike. In their final battle All Might, and his closest companions created a powerful weapon and banished All for One and his minions to the deepest trench, Tartarus, bringing peace. However, All for One gave a final warning before he was sealed.
"This is NOT the end All Might," All for One hissed "I will break free, and then rescue and reclaim what is mine…"
It's been several years since, but All Might had heeded the serpent's warning and founded the great port city of UA where humans and merfolk co-exist with its many water ways. As well as to train its children to be future heroes in order to prepare for All for Ones return as well as to protect and help its citizens. As they must be on constant guard against the few that are still loyal to All for One. As they continue to search for the two things that can set their master free. The powerful weapon that All Might used in their final battle, and a precious stone that that was stolen from him the night before the battle.
This precious stone was said to hold all of All for Ones powerful magic as Leviathans and Monsters of the Deep don't have the ability to generate mana for their mana cores in order to cast magic. Which is why they have to devour other being in order to gain mana. Some say that this precious stone was taken by All Might and his rebellion while some say it was All for Ones own mate who took it as she mysteriously disappeared before the fight.
So, as long as these sacred items remain locked away and out of reach All for One will forever be sealed.
"Wow! All Might's so cool!" cheered a little boy with a mess of green curly hair, and freckles speckling his face, bouncing on his bed as his mother chuckled and closed the white leather-bound book "I hope some day I get to go to UA's hero academy and become a hero!"
"I'm sure you will Izuku," chuckled his mother trying to settle down the energetic three-year-old "However, now it is time for bed. Tomorrow is a big day for you."
"Yep, its my birthday and my magic ev-eval-evaluation," grinned Izuku as he snuggled underneath his blankets "I hope my magic will be like yours."
For a faint second there was fear and sadness in his mother's eyes before smiling back at him. "I'm sure it will, now time to go to sleep." She then bent down and kissed Izuku on the forehead before heading to the door.
"Good night mom," yawned Izuku.
"Good night Izuku, I'll see you in the morning," said his mother as she blew out the candle on the nightstand next to the door and as she left, she closed the door behind her.
After a while when Izuku made sure his mom was gone and asleep he fished something from underneath his pillow. He pulled out a small vial with a cord wrapped around it so he could wear it around his neck was filled and sealed water. Inside the water was what looked like flecks or slivers of an opalescent stone that gave off a feint glow.
'Maybe I'll have magic similar to yours dad,' pondered Izuku 'It would be so cool if I even had a combination of moms levitation and your fire. You know Hero Endeavor just announced that his youngest son has a combination of his and his wife's magic is that so cool I hope I can meet him one day. Then again, they are nobles… However, I'll still somehow make it to UA and become a hero just like All Might and you dad!'
Then with a large grin Izuku tucked the vial back underneath his pillow and drifted off to sleep with dreams of the future.
- Deep within Tartarus Trench -
A massive pale white tail stirs shaking off the built-up sediment that had settled on it as a large serpentine head lefts up rattling the magically imbued chains tethering into the ocean floor. As the creature slowly open its tired blood red eyes spotting a pale white Mer with pale blue hair swimming towards it.
"Tomura, have you found them yet…" rumbles the massive serpent with a hint of annoyance.
"We found where they are keeping the trident," reported Tomura before looking away in shamefully avoiding eye contact with the beast "However we have yet to find your precious pearl…"
The serpent scowled before it let off a deep and loud hiss from it throat. "Focus on the trident for now," growled the serpent "However keep an eye out for my dear pearl it would have grown much by now… Though you need to find it before the magic I gave it runs out understood, we need to keep it safe!"
"Of course Sensei," bowed Tomura before swimming off towards the surface "Soon you will be free again."
So for the time being this will be a one-shot as I was hit with the inspiration stick and had to write it all down before I forgot. So if I have time I will add more chapters or if enough people ask me to work on this more. For now though it will be one fic at a time.
