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Y/n is warned to never go near the surface by her pod. She's been going near the surface every night and very early at dawn, sunrise to relax, sing, watch the sunset. Being a mermaid had its many blessing and curses. They were creatures of great beauty and magic, from their beautiful voices to the powerful magic in just a single tear. So naturally, they were secretive creatures.

A great lake deep in the forest of Atigus, a large pod of Merpeople lived in this lake. A lake so deep it could have been mistaken for the deepest part of the ocean. Living so far down in the deeps, they were a bit isolated from the many magical and grand creatures that also inhabit the forest.

Yet Y/n was a curious individual and would swim near the surface, in hopes of seeing another creature. Thought she was smart enough to know that there is one creature that she must avoid at all costs, Man. Yet She would brave the bright surface, and sing out to no one in particular.

One day as she ventured to the surface at sunset, she began to sing into the wind. As she rested on the lake's edge, she suddenly felt a painful sting on her shoulder. Y/n gasped in pain, but her body became so heavy suddenly and lost all control. As she laid there motionless, as she heard the snicker and the strange language of humans.

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The humans quickly slumped the unconscious mermaid onto their backs and tried to find their way back to the village. Yet as they walked down the path, they could feel predatory eyes watching them.

As one of the humans looked around, they noticed that special markings were etched into the tree's around them.

"Oh no, we have walked into Naga territory," one of the humans gasped in horror.

As the two trembled, a large shadow engulfed them. The tallest stood up to 9 feet in height, standing above them, while the shortest stood 7 feet. They couldn't begin to fathom how long these nagas could be. These giants glared down at the small humans that had invaded their territory.

Dealing with the humans was simple, yet something did catch one of their eyes. The smaller green naga noticed the abandoned creature on the ground.

"What is that?" The freckled naga wondered.

"It looks like to be a humanoid creature like us," a red and white naga commented as he leaned over the mermaid.

"Yet, it's not. Its scales look strange and its tail is so short, it's the same size as those pathetic humans," The ashy blond Naga scoffed as he picked the mer by her tail.

"K-kacchan! Careful," the green-haired naga gasped.

"Why does it look like part fish?" The red and white naga asked, " You should be careful, Bakugo."

"Whatever, Deku," Bakugo scoffed, as he tossed the body over to green Naga.

"Nice catch Midoriya," The red and white naga commented.

"Thanks, Shoto," Izuku sighed as he got a closer look at the creature.

"So what do you think it is?" Shoto asked.

" It must be some water-faring creature, other than that I'm not sure," Izuku said as he held the mermaid close. " It would be nice to speak to her about it. Maybe I could hold onto her, F-for a little while."

"Why?" Shoto asked.

"Probably cause this will be the only female that can't walk out on him for better a mate," Bakugo commented.

"I think you may be projecting a little, Bakugo," Shoto commented.

Bakugo scoffed and slithered off somewhere else, as Izuku and Shoto stood in awkward silence.

"S-so does that mean I can? N-Not for the reason that he said!" Izuku said quickly.

"I'd... Certainly hope not," Shoto said simply.

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As Y/n slowly came to her senses, she could feel something odd. As she slowly opened her eyes, she noticed that this body of water was barely deep. Plus something was wrapped around her, it felt strange.

She slowly opened her eyes, to see that the surface of the water was just a foot above her head. And wrapped around her waist was a tail, a snake tail. Y/n tensed slightly, but the creature felt her movement and quickly tightened its hold.

She was suddenly pulled up above the surface and was face to face with a freckly face with forest green eyes. His eyes were full of wonder and curiosity as he inspected Y/n very closely.

Y/n wanted to scream, yet remained frozen. Not only was she unsure of this creature, but also intimidated by its great size. She never felt so small and helpless.

"what are you? And who are you?" Deku asked as he muttered other questions.

"A-a mermaid, my name is Y/n," Y/n squeaked nervesly.

"Ah, like an Oceanid," Izuku smiled." I-i have to write this down, I have so many questions."

As his tail wraps more around Y/n, she watches as the snake man turns to gather his parchment paper. They were covered in writings and notes about almost anything. Before Y/n could get a grasp of what was happening, she was drowned in the naga's curious questions. He must have not been paying too much attention as he tightened his hold.

"C-can't...Breath," Y/n whimpered as she passed out.

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Deku suddenly felt Y/n go slack, he stopped rambling and quickly looked at her.

"AHh! Y/n," Izuku gasped as he quickly placed her back in the small watering hole.

"Oi, killed it already," Bakugo laughed mockingly.

"N-no, Y/n passed out," Izuku said nervesly.

"So what is she?" Shoto asked as he tried to get a better look.

"An Oceanid, but she calls herself a mermaid," Izuku said as he put down his notes.

"Hmm, well what were those humans doing with one?" Shoto asked.

"Probably harvest her for magical properties. If they can't possess magic on their own, then they will take it," Bakugo scoffed simply.

"Well, I'm glad we came across those humans then," Izuku said with a relieved sigh.

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After a couple of weeks, Y/n grew used to Izuku and his curiosity. She would learn many things about him, that he was defiantly a curious Naga and a very emotional one. Will cry a river at any strong emotion he feels. Y/n could only hope that this small pool of water was not his tears. She would learn a bit about his other two companions.

Bakugo is the most prideful and skilled of the three. Always going off how he will be the best and rise the ranks among their kind. Shoto on the other hand seemed very calm out of the three. Almost to the point where he seemed indifferent about everything, though he takes everything very seriously.

Izuku would also learn a lot about her and her home in the great lake. How they knew many great magical treasures and plants within Atigus. It was just so fascinating to him, and it felt so nice to have someone discuss the magical phenomena with him.

As Y/n rested in Izuku's coils, a question came to mind.

"Hey Izuku, you've been so sad as of late. What is making you so sad?" Y/n asked.

"Um, it's a little embarring to talk about, but... The season of union is coming to an end soon. And during this time Nagas begin to pair and bond, and we bond for life. Sadly a girl I had my heart set in already bonded with someone else. So I may just end up being unpair," Izuku explained.

"What about Bakugo and Shoto?" Y/n asked.

"Well, most are annoyed or frightened by him, and would rather stay far away from him. And Shoto, has a bit of a hard time, umm, connecting to others," Izuku said slowly and awkwardly.

"Oh, well I'm sorry to hear that. I can't see why you would not find someone. Your sweet and so kind," Y/n smiled as she rested her harms on his coils.

Izuku's face turned a bright red as his tail tightened slightly. His heart fluttered in his chest as he stared down at his Oceanid friend.

"Y-you really think so?" Izuku mumbled, as his eyes watered.

"Despite your timid nature, you are willing to help though in need. Even if they may not deserve it," Y/n smiled up at him.

"Thank You Y/n," Izuku thanked as he cried waterfalls as hugged Y/n closely.

"Though you can be a bit of a cry baby," Y/n winced as she was drenched in tears.

But he didn't hear the last comment as he hugged her close.

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"Shouldn't you be returning Y/n to the great lake, Surely she would like to return to her home and family," Izuku's friend Iida asked.

As the two patrolled the large Naga territory. Izuku's heart began to thump in his chest in a panic at the thought. The thought had many times came across his mind, but the thought of parting with her. Tore his heart apart.

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"Oh, you're still here?" Shoto asked as he entered the cave.

"Umm, have been for this past Month Shoto," Y/n said as she poked her head above the water.

"Izuku must hold you dearly if he hasn't returned you home yet," Shoto said as he found a comfy spot and laid down.

"Y-you think so?" Y/n asked nervesly.

"Hmm, don't you miss your family? I'm surprised you haven't asked him to return you," Shoto commented.

As Y/n studied him, she could feel something about those words. Like it wasn't just meant for you to answer.

"Are Nagas not close to their parents?" Y/n asked.

"Um, not all, but most," He said with a slightly sad look.

"What about you, if it's not too personal?" Y/n asked.

Shoto stayed silent for a time, as he slowly touched the burn on his face. " I could care less what my father is up to, but I... I do wonder how my mother is doing after she ran away from me and my dad," Shoto said sadly.

"W-why would she do that?" Y/n gasped.

"She said my left side and red scales looked too much like my horrible father. She burned the left side of my face and ran," Shoto answered as he covered his scar. " I was too horrible for her to look at."

Y/n frowned sadly at his story and pulled herself up onto the dry ground. She slowly approached Shoto's tail as she awed at his lovely scales.

"Your white scales shine like pearls, and the red ones look like rubies, your so lovely, Shoto," Y/n said in a soft tone.

Shivers ran up his spine as he felt the warm fingers slide across his scales. His heart pounded in his chest as he slowly coiled his tail around her.

"Y-you couldn't possibly mean that," Shoto said slowly.

"Of course I do. You know if you smiled more, maybe the ladies or gentlemen would flock to you," Y/n smiled.

"Flock? Like... Birds?" Shoto asked, really confused.

"No silly, I mean many would find you more approachable," Y/n laughed.

Her laugh was so small and cute, he could help but tighten his hold on her. He could feel her warmth on his scales as he slowly leaned in closer to her.

"If you're doing what I think you're doing, then you two are disgusting," Said a voice.

The two quickly turned to see Bakugo, who came back from a hunting outing. A large boar was slung over his shoulder as he entered the cave.

"Find a different part of the cave to suck each other's face," Katsuki grumbled.

"Why would we do that?" Shoto asked with pure confusion.

"Cause It's decent," Bakugo growled.

"No, why would we suck each other's faces?" Shoto asked again.

"I'm done with you," Bakugo scoffed.

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Shoto and Izuku had to eventually leave to do a final scout turn, leaving Bakugo and Y/n. Bakugo had no interest in talking to the mermaid and did his own thing, by cooking the boar he caught. Y/n with nothing to do hummed to herself, her voice echoing off the walls of the cave.

"So you were the source of that voice," Bakugo said suddenly.

"Ummm... I was right next to you. How did you not know until now?" Y/n asked with a deadpanned look.

"No, every time around sunset I could hear something in the wind. A voice, singing," Bakugo said simply.

"Oh, I thought I was just singing to myself," Y/n said bashfully.

"More like to the whole forest," Bakugo huffed.

"Was I okay?" Yn asked slowly.

"You were definitely better than those harpies who think they can sing," Bakugo scoffed, turning away to hide his red ears.

"That is so sweet of you to say," Y/n said, slightly touched.

"Tch. Well, I don't really care for the noise of rain, you can keep doing what you were doing," Bakugo said slowly.

Y/n smiled at the tsundere naga and continued her song.

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(3 weeks later)

Y/n and the three nagas grew closer and closer during the 3 weeks. The season of Union was quickly coming to a close, but tensions were high among the three males.

One morning, Shoto had his tail wrapped protectively around Y/n's sleeping form when he heard a soft but challenging hiss. Looking up sightly he could see it was Izuku. Izuku's usual large round pupils were now slits, as his serpentine tongue flicked between his lips.

"Yes, Izuku?" Shoto asked coldly.

"Your turn to patrol soon, maybe you should let her go now," Izuku said as nicely as possible, as he slowly inched closer.

Shoto tensed as Izuku slowly got closer. Shoto's pupils quickly turned to slits as he hissed back. Y/n was unable to sleep through the loud noises coming from the two.

"What's with all the noise," Y/n groaned sleepily, as she untangled herself from Shoto's coils.

"Would you shut it you two," Bakugo growled, as he pulled Y/n's sleepy form closer to him.

"B-bakugo, careful," Izuku hissed.

"I am," Bakugo said simply.

"Don't you both have some place to be?" Izuku said with a slight hiss.

"W-what are you all fighting about?" Y/n asked, slightly more awake.

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Pt.2 maybe?! I don't know