Hi everyone! I have a very exciting announcement. The next 30 one-shots are going to be the 30 Day AU challenge. I got the idea from LyssaLa's "For a Thousand More" (BTW if you love EreMika, I suggest you read that beauty) and decided that I liked it so much I would try it. Now I might not be able to do the one-shots, exactly day by day because of school and family, and surprisingly I have a life, but I will try my hardest. I hope you enjoy! Also, please no hate, it hurts my feelings.

Day 1: Fantasy

He remembered sinking in the turquoise ocean, but at that moment it seemed nothing more than a black void of cold darkness. Floating in the void free of gravity. The ocean was always something he loved, something he respected. He understood it's beauty and its dangers. He found true fascination by the way the waves softly crashed against the rocky beach, their curling fingers brushing each stone with a gentle caress. But all he could feel was the way the cruel waters seeped through his clothes, freezing him slowly to the bone. He could barely see the moon through the murky blue and black that was clouding his vision. His head was pounding, every cell in his body screaming for oxygen. He kept fighting until his head felt like it was going to explode. He needed to take a breath. So, he did…For some reason it didn't hurt like he thought it would. He wasn't scared anymore. It was almost peaceful. He begins to fall. He falls further and further into the darkness until it threatens to swallow him whole.

The last thing he remembered was a song and the silky black caress of what seemed like hair against his chest. For then, he was consumed by cold darkness.

Beeps and chatter echoed throughout the hall where he currently stood. Dressed in a white coat he typed into the computer he was at. He rubbed his temple where he could feel an incoming headache from coming out of a 6-hour surgery where he observed an Appendix removal. For it was usually an easy procedure, if he was to become a general surgeon like his father wished him to, he was to gather as much info and follow each step of the procedures as he could. He was only an 18-year-old boy in college but since his father was the head of General Surgery of Shiganshina Hospital he managed to slip his son into the surgeries and let him do all the paperwork involving the more simpler procedures.

So, with his clipboard in hand and his slowly drooping eyes he saved the data and sent it into the main desk. He walked to the main desk on the floor and placed the folder with the clipboard inside the data drawer. He glanced at the clock above the shelves behind the desk and mentally cheered. He had 10 minutes left of his shift and he could finally go home. He couldn't hide the yawn that escaped his lips as he placed himself in front of one of the nurses.

"Cindy, could you page my father, please?" he asked. Cindy nodded and picked up the phone, punching in numbers.

"Grisha Jaeger, please report to main desk on floor 4, Grisha Jaeger, floor 4," her voice echoed through the whole hospital. She placed the phone down and shot him a smile before going back to whatever it was she was doing before. The boy sighed into his hands, rubbing his eyes to try and keep them open.

The boy sat down on a bench just a way away from the main desk, awaiting his father. He just wanted to go home and see his girlfriend. Hold her in his arms while they both slept. He hadn't seen her in almost 2 days. Work at the hospital has kept him busy, he also only just finished his final exams for the year a week ago. For extra credit he was to continue to work for his father in the hospital throughout the summer. His father told him that he was to only work about 2-3 days a week, for he wanted his son to enjoy time with friends and have fun. He was very happy about that. Though he had many friends he was mostly excited to spend lots of time with his girlfriend, Mina Carolina. She was his girlfriend of almost 2 years and he couldn't be happier. For the beginning of college, they decided to share an apartment together as a step farther into their relationship. He missed every minute that he spent away from her and he couldn't wait to see her.

"There's my boy!" a voice boomed. The boy looked up and grinned at his father. He stood up and hugged him. "How was the surgery?" he asked.

"Long," he sighed. His father laughed.

"Just you wait, when you finish your last 2 years of college you will be on your feet in that OR for up to 12 hours, perhaps more," he said. The boy grimaced.

"Yay," he said sarcastically.

"Don't use that tone with me, young man. I know we may not live under the same roof anymore, but I can still whoop your ass," his father said. Grisha's phone went off and he took it out of his pocket. "Well, it looks like your shift is up," he said. The boy sighed in relief. "Now," he said clasping his shoulder. "I need to get some rest, I got a heart transplant I'm scrubbing in on tomorrow at 8 AM," he said. The boy started to walk away when his father spoke again. "And Eren," he said, making him turn around. "Say hi to Mina for me."

Eren climbed into the driver's seat of his car and immediately started the ignition. He wanted to get home. Exhaustion was all he felt and he could barely keep his eyes open. The vibrations of the cars engine shook the car as he shifted into reverse, backing out of the parking spot, before turning out of the parking lot and onto the main road.

The ride home was quiet and very long. The radio was playing in the background softly, but Eren paid no mind to it. From time to time he glanced at his phone, which was on the passenger seat. He was a little concerned. Usually, Mina would call him when she knew he was off.

'Guess she's tired, probably in bed. It is just past eleven', Eren thought. With an exhausted sigh, he turned the radio up higher to keep himself awake.

He pulled into the driveway of his small apartment, well, small house, and got out of the car. Sure enough, all the lights within the house were off. He stepped up onto the porch and took his keys out. He put his hand on the knob and lifted the key when he realized something.

'Wait, why is the door still unlocked? Regardless of whether I am coming home or not, Mina always locks the door when she goes to bed'. Eren brushed it off, that she nearly forgot. He carefully opened the door and tried to be as quiet as possible. He took his shoes off and put his bag by the desk in his living room. He took his jacket off and made his way up the stairs to his room. As he climbed the stairs, he nearly jumped out of his skin when he heard a thump. Confused, and a little concerned, he escalated up the stairs faster. He turned into the hallway and towards his bedroom door, where he assumed the sound came from. As he grew near to his room he began to hear sounds. Human sounds. Even more confused he opened the door and walked in.

His blood ran cold at what he saw. His whole being melted away and he felt like he was punched in the gut. There he saw his girlfriend in the bed, but with another man.

"Ah, Eren!" Mina cried out, trying to cover herself. Eren turned to the lamp that was on the floor, guessing that was the source of the thump. "Eren, it's not what it looks like!" Mina said. She had tears in her eyes, as she tried to read Eren's expression.

"Get the hell out of my house…" Eren said. Mina almost burst into tears. Eren wasn't looking at her, just at the man who was currently on his property and invading what was his. "I said…" Eren stepped closer to the bed making the man get up. "Get the hell out of my house, you son of a bitch!" Eren roared. The man scrambled out of the bed but didn't even get time to grab his clothes as Eren grabbed him and dragged him out of the room and practically threw him down the stairs.

The man fell just in front of the door and Eren leapt on top of him and punched in the face, gut, stomach, anything he could reach. He could briefly hear Mina screaming in the background, but he wasn't bothered by it. The man was trying to get away from Eren's wrath, but Eren wasn't having it. He picked the guy up by the neck and opened the front door, throwing him out. He slammed the front door shut and whipped around to see Mina, in tears on the stairs. Eren felt betrayed, he felt angry.

"Go grab your fucking stuff and get the hell out of here," Eren said. Mina was a mess.

"No Eren, please!" Mina sobbed. Eren walked up towards the stairs and up them. Mina tried grabbing onto his legs to stop him, but Eren, being stronger, merely removed her. She stumbled after him as he went into his bedroom and grabbed a suitcase from under the bed. Mina was trying to grab him to stop him, whilst crying, but Eren paid her no heed. He went into his closet and grabbed all her stuff, shoving what he could into the suitcase.

"Eren stop, PLEASE!" Mina cried. "I still love you! I'm sorry!" she sobbed. Eren didn't respond. He simply zipped up the suitcase and started back down the stairs with Mina chasing him. He opened the front door, glad to see he didn't kill the man, because he wasn't there, and threw her stuff out. Mina was sitting on the stairs crying watching as Eren turned around and grabbed her arm. Mina tried to grab a hold of the railing to stop him, but she knew that Eren was much stronger. He didn't try to fight her, just simply get her out. As Mina kicked and screamed in his arms he placed her outside, which was pouring out, and shut the door in her face and locking it. Mina started banging on the door, pleading and begging to be let in. Eren was sad, but he was too blinded by rage to show it.

"Erehehehehehn! EREN! LET ME IN!" Mina shrieked. Eren unlocked the door and opened it, not looking Mina in the eyes. Mina stepped in and tried to hug him, but he stopped her.

"I'll go grab my stuff," Eren murmured. Mina started to cry again.

"No Eren, please, you can stay. It was a slip, I'm so sorry!" Mina said grabbing his face. Eren took her wrist gently and pried them away. Mina had a look of betrayal, and Eren should have been angry at her for playing the victim, but he was too emotionless to feel anything, but betrayal and hurt. "I'll leave my key with you and I'll find a place to stay for the night," Eren said walking up the stairs. Mina chased after him, still trying to stop him from leaving, but Eren didn't speak to her, didn't try and fight with her, all he wanted was to get out of that house.

Eren tossed his stuff in the trunk of his car and slammed it shut. Mina was in the door way, wearing nothing but a shirt as she screamed out to him through the rain. He didn't listen he got in his car and drove off, leaving all that was left of Mina in his heart behind.

The whole car ride Eren could feel his heart throbbing from the pain. He held back his tears, not wanting them to cloud and blur his vision of the road in front of him. He already knew where he was going. He couldn't afford a hotel now and it was kind of last minute, not to mention it was late at night. He could always go to the hospital, but it was way in the city and he wanted to stay away from that place as much as possible. He maybe should have called before he jumped in his car and started to drive. It then occurred to him. He was eleven thirty at night. Eren shook his head. He knew it wouldn't matter what time it was, hell, he could be in Africa and his friend would hop on the first plane there and fly over to him. With his new-found confidence and desperation to show how much he was hurt, he pressed on the gas pedal more and sped down the road.

Parking on the side of the road he immediately got out of the car and pulled his suitcase out of the trunk. The rain was beating down and the sharp wind bit into his skin like daggers, but he was too numb to even acknowledge the pain. He walked up the driveway and onto the patio. All the lights were off, and he only saw one car in the driveway, so he supposed his grandfather was away on another retreat. He knocked on the door loudly. For a few minutes there was nothing, which was to be expected.

Finally, Eren heard footsteps on stairs and he heard a thud, then a curse. He saw someone stumbling towards the door through the ripple glass window. The door unlocked, and a boy was in the doorway. He was just a bit smaller then Eren, with shoulder length blonde hair and bright blue eyes, which were currently glazed with sleep.

"Eren?" he asked. "What are you doing here this late?" he asked. Eren said nothing and just stared at him until tears pooled into his eyes. The boy was stunned. "Eren?! What happened?" he asked more franticly. Eren took a shaky breath and choked back his tears. Then he noticed Eren's suitcase.

"Mina, she cheated on me," Eren murmured. The boy's shocked face turned into one of anger.

"Are you serious?" he asked. Eren nodded. "Why? You did nothing wrong and did nothing to deserve it!"

"Armin, please, I don't really want to talk about it right now, plus it still is eleven at night," Eren reminded. Armin scowled.

"Come in, you can stay here," Armin said, moving to the side. Eren looked at his friend gratefully and entered his house. Armin shut the door and took Eren's suitcase.

"Armin-,"

"Eren, I know that you can handle yourself, but I think you should take time to yourself. You can go in the living room if you'd like, or you-,"

"I think I might just go for a walk instead," Eren muttered. Armin bit his lip.

"Are you sure? I mean, it is still raining a bit out there," Armin said. Eren shrugged.

"I'm sure the fresh air will help a little," Eren said. Armin nodded.

"Alright, if that's what you want, I'll get your room all set up." Eren thanked his friend and was out the door once again.

Once Eren was out of the yard, he ran. He ran and ran and ran to God knows where. He ran until his lungs burnt and his legs shook from overuse. Eren looked at his surroundings and saw that he was on the boardwalk on the ocean. The waves crashed over the old, rickety wood and the squeak of said wood sounded wherever he stepped. The sight of it hurt him a little, because this was where he and Mina had their first kiss. Heaving a sigh, Eren decided to walk to the end of boardwalk, for old times sake.

Admiring not only the ocean, but the sky to, Eren stopped near the end of the board walk. The boardwalk ended right in open water, where he was about almost a mile offshore. Eren leaned against the wooden beam that bordered the entire walkway and looked out into the ocean.

Lost in his thoughts he didn't even notice the wood crack under his weight. The more he stayed in that position the more the wood gave away. The wood shifted, snapping Eren out of his reverie and before he could react, the cold hit him, and pain exploded in his head. He must've hit his head on a wooden beam before hitting the water. His vision was blurred and fading, fast. He barely had time to take a breath before plunging into the ocean. He was sinking, and he couldn't see anything, the cold was too much for his body to handle. A sense of anguish, more so than pain, had taken rule of his heart, and he was extremely light-headed. Darkness enveloped him. The water closed in around him, filling him with deep dread. He held his breath for as long as he could, too long in fact. Red and black splotches danced in front of him and he couldn't tell if his eyes were open or closed. The coldness he had felt was gone, replaced by numbness of all life leaving him.

I see you there

Eren's hazy eyes opened a little, having heard a sweet melody.

Solemn and heartbroken

Eren's eyes slowly shifted around, but he couldn't hold on for much longer.

Pain and suffering will consume you no more

Eren's eyes drifted to close, and the last thing he saw was black hair and sparkling grey eyes.

Coughing and hacking up water, snapped Eren awake. He was on his back, so he leaned to his side, spitting out salt water. Taking deep breathes to calm his now aching lungs, Eren eyes widened. He looked at his surroundings and realized that he was laying on the beach. It was still dark out, but he didn't know what time it was, and he couldn't check his phone, because it was sitting back at Armin's house. Thinking back to his previous incident, he vaguely recalled seeing someone. A face, a beautiful one at that, saving him. But the question was, where was it now? Eren shakily stood up and looked around the beach. He was the only one there. Eren stepped forward, but immediately yelped in pain. He looked down to see a rock with a little crystal on it. In frustration he picked it up and threw it into the water. He sighed and put his face in his hands. The sound of something landing in front of him made him looked up. There right in front of him, was the rock he'd thrown.

Eren stared at the rock with bewilderment. Looking at the water then back at the rock, Eren picked it up. He, again, threw it into the water and waited. Like Eren assumed it would, the rock came flying back to him, out for the water like a dolphin.

"Hello?" Eren called into the night. Nothing responded. "Is anyone out there? I won't hurt you!" he said. Nothing…just the sound of the waves crashing against the beach. Eren stepped closer to the edge of the shore. Eren was finally just at the waters edge when something even more surprising happened. The water parted for him. Eren took another step and sure enough the water again spread for him. (A/N: You all know what movie that's from XD) Trusting his instincts, he allowed the water to part for him as he walked deeper and deeper into the ocean. The water wall around him got higher and higher with it closing in behind him once he was out of the way. He saw fish and lots of distinct types of plants and shells through his water wall. He reached his hand to touch the water wall and the chilly water made him retract his hand.

Suddenly, a sea turtle drifted in front of Eren, stopped to observe him. The turtle went to the edge of the water and stuck its head into Eren's bubble. Eren stroked the turtles nose, smiling at the texture of the turtle.

"Beautiful, aren't they?" a voice said. Eren jumped, but surprisingly the turtle stayed put. Eren glanced around hastily, trying to locate the source of the voice. A being wisped passed from behind the turtle and hid behind a massive rock. Eren couldn't see the being exactly, just a fin of a shadow black tail. But from the voice, he could tell it was a female.

"Who are you?" Eren asked.

"Just a friend…" she trailed off. Eren's eyes narrowed trying to make out the figure in the dark.

"You're the one who saved me, aren't you?" The girl made a knowing sound.

"You are right."

"Can I see you, please?" Eren asked. She shifted.

"If you were to gaze upon my face, I risk letting you know about the world below the sea's surface," she explained. Eren softly smiled.

"I've already seen a little of your face, there's no point in hiding now," Eren explained.

"I suppose you are right," she said. Slowly, but surely, the girl made her way out of the darkness and into the moonbeams of the pale moonlight above. Once she was in full view, Eren found his eyes widening. She was beautiful. Long black locks that swayed in the slight movement of the ocean, pale skin that seemed to reflect off moonbeams, making her glow. Dark, mysterious eyes full of life and wonder. Her black tail radiated power and purpose as it swished through the water creating bubbles and ripples. She was wearing seaweed for a bra, the powerful plant wrapped securely on her breasts with it tied in the front.

"You're a…mermaid," Eren managed to get out. The mermaid did a little laugh that sounded like tinkling bells.

"Siren, actually, but we sometimes go by that name," she explained. The siren moved closer to Eren's bubble of land and was directly in front of the boy. Eren couldn't help but admire her from up close. "My name is Mikasa Ackerman, the Umi no ojo," she introduced.

"The what?" Eren asked. Mikasa smiled.

"The Princess of the Seas," Mikasa translated. "The culture of us sirens begun with the Japanese. I am part Japanese because of my mother, but she had bed an American human therefore bringing me into this world," Mikasa said.

"Whoa, that's cool," Eren said. Mikasa nodded.

"It is, but I'm afraid I just can't stay much longer, my brother will be home from his mission any time now, and he has told me to never interfere with a human life," Mikasa said.

"Oh, I see, will I, uh, will I ever be able to see you again?" he asked. Mikasa smiled softly and reached her hand through the water wall.

"Only time will tell, but I will try, if that's what you want," Mikasa said, grabbing his hand. Her skin was cool, with a smooth water like surface.

"I want to know more about your world," Eren said.

"I normally am not allowed to reveal such information, but I have a feeling I can trust you," Mikasa said. She put her hand out and at first nothing happened, but a wave of water came through the water wall and placed an object on the sand. Eren was surprised to see the rock they had tossed back and forth. It was the same one, but with a little blue tint to it. "This rock contains mer-magic, that when you throw this into the water, it will send a soundwave to me and I will know that you wish to see me, and I will come to you," she said. Eren grinned.

"That's amazing," Eren said.

"Until next time, Eren Jaeger," she said. Mikasa was gone and Eren had blacked out before he could ask her how she knew his name.