eruri and mike x levi mentioned in passing i promise its almost nothing :D also dont hate me for what I did to isabel


Eren POV

Mikasa insisted that I stay in bed and not help her with the chores of the day. I felt guilty watching her work from my window, but I knew that if I went out and started to help, she would question my sickness excuse. I did prepare lunch for us, though, a simple pasta with sauce. Mikasa told me that she didn't see any sign of Armin while she worked. That was strange, considering how he met with us every day.

We decided that two days of absence was enough to justify a concerned phone call. His grandfather answered. Apparently Armin was sick, after all. I tried to look completely sad at this news, but inside I was just a tiny bit happy I would get another night with the book. I planned to show Levi it tonight. I wondered what he would think, especially of the illustration of the merman that looked like him.

Mikasa helped me wash our dishes, and I suggested she take a nap.

"I'm fine, Eren," She said looking at me sideways. "You're the one who's sick, not me."

"You had to do all the morning chores yourself. Plus, if you run yourself down, you'll be more likely to get sick, after all."

"I'm not tired or anything. I'm very strong, Eren, I can handle taking over the chores for a little while." She hummed. "You wanna go to a doctor or something?"

"You and I both know we can't afford that." I said, then continued pressing. "Which is exactly why you can't get sick, too. With us both out of commission, nothing will get done around here."

"Well, Dad's check was bigger this week. They have been steadily increasing lately…I don't know if his pay is getting better or if he's just sending a bigger portion of it home to his kids or what the deal is, but we have money for medicine for you, Eren." She leaned in to hug me and I backed up.

"I might be contagious." I hated not hugging her, but I had to give credit to this lie. "Also, I don't need medicine. Some rest will be fine."

"If you say so…" She tugged her scarf her scarf up to her mouth and looked down. I felt like shit.

"We should both take naps. We both need rest."

She looked at me for a long time before nodding. "Yeah."

I watched her go to her room on this floor before I headed up to my own. I started to reread the mermaid book while I kept the door open to listen for any noises downstairs. I blushed as I read about the mating cycles again. I tried not to picture mating with Levi, and failed. I wondered what he look like as a human. A very naked and horny human. Would he just jump on me after turning human or would he need some time to adjust? Would he cuddle with me in-between mating times? Has he ever mated with a human before?

I shook my head. I was thinking like I was going to mate with Levi tonight. Not only was that impossible because he wouldn't be in human form for another week, but also I was still 17. These past couple days, I had been thinking hard about my age and what it really meant to me. Why did my age matter to me so much suddenly? Maybe I was just adamant about the age of consent with Levi because I wasn't ready, yet. His next mating cycle was in a week, and I doubted I would be ready for him by then. But what about his next mating cycle? Or the next? Would I be ready in a month? Two? After my birthday?

Who would he mate with next week? He had said he had a list of possible mates. I wondered if he would let me meet his mate. Did he have merperson friends? Merperson family? If so, I wanted to meet them. I would ask him about these things tonight.

I would also ask him about our schedule when he started mating. Though it had only been two days, I liked to think that we were developing a nightly visitation schedule. I couldn't imagine he would be okay with me visiting while he was mating. We couldn't exactly make friendly chatter while he was mating someone. I doubted that the merman he was mating would be happy with my presence there, either.

After a couple hours of thinking, I was sure Mikasa was asleep. There hadn't been a peep from downstairs in a while. I pulled my shoes on and tip-toed out to the stairs. Last time I was sneaking out, I had an idea that I wanted to try, and now I was going to try it. Instead of going down those horribly creaky stairs, I swung my body onto the railing and braced myself. I had slid down the railing a lot of times as a kid, but never when I was this big and heavy. I would wake Mikasa if I waited too long to jump off and slammed into the ground.

I panicked about halfway down and jumped way too soon. Instead of gracefully landing with a tap, I thunked onto the floor and had to scramble to get to my feet. I paused, holding my breath. The only sound was the ocean in the distance, and I relaxed. I made my way outside to the shed and grabbed the diving bag and everything else I needed. I was practically giddy with excitement thinking about visiting Levi tonight.

I couldn't avoid the steps on the way back up, and I woke up Mikasa. I winced as I heard the first couple loud groans of the steps and just dashed the rest of the way up. I stashed my shoes and the stuff under my bed and waited until Mikasa got up.

"Eren?" She called up the steps.

"Yeah?" I called back, stepping outside of the room.

"You okay? I heard you running around pretty loudly. Did you fall?"

"Nah. I'm okay." I walked downstairs and Mikasa frowned at me.

"You didn't nap, did you?"

"Why are you saying that, Mikasa?" I asked, looking at the ground.

"You always have little boy bed head when you wake up. Your hair is fine right now."

"Oh." I looked back up at her. "Couldn't sleep. I'm glad you did, though. You worked hard today."

She hummed and glanced at the clock.

"Let's do an early dinner. I'll make us something." She started to head into the kitchen, but stopped and looked back at me.

"Yeah?" I asked.

"You know you can tell me anything, Eren."

"Yeah."

"I love you, Eren."

"I love you, too, Mikasa." I smiled at her and she disappeared into the kitchen.

I felt bad keeping Mikasa out of the loop, but I didn't think it was the right time to tell her about Levi. I didn't think she'd believe me, and I knew she wouldn't like me going down to the cove to see him.

The rest of the night passed pretty normally. Mikasa gave me some vitamin C tabs and insisted I drink lots of water. We talked about Armin and we planned our next trip into town. She and I went into the living room to watch a movie after dinner, and I couldn't help glancing at the clock. What was Levi doing right now? These past two days he had met me in his cave. Where did he go before coming home? Did he have a merperson school or work?

Around 7 o'clock I started yawning. She put in the sequel to the action movie we were watching and I missed most of it, thinking about my merman friend and what he was doing right now. What did merpeople do for entertainment? I would have to ask him.

At 10 o'clock, I started itching for Mikasa to call it a night. She normally went to bed around this time, but I guess the nap meant she didn't need to turn in so early. Great. I said goodnight and went through my fake bedtime routine around 10:30. It was earlier than I usually went to bed, especially since school wasn't in session right now, but I was 'sick' and also hoping to get to Levi as soon as I could.

It was midnight before I heard the tv flick off downstairs and Mikasa walk to her bedroom. I waited a few minutes before I slid off of the bed and pulled out my things. I tucked the book into several zip up bags before I put it in the water-proof bag just in case. I felt a little silly doing it, since the bag was designed to transport things underwater, but I just had to be sure. I put the attached rope onto my wrist and slipped on my swimming trunks. After putting on my water shoes, I was off to see Levi.

I slid down the rail again, this time landing softly and made it out of the house easily. I saw that the moon was getting closer to being full. Levi should start acting more and more aggressively as it got closer and closer to full moon, especially since he was cold water. I wondered briefly if I should be concerned for my safety, but shook it off. I didn't think Levi would ever hurt me.

Like all the other times, I waited until I was out of sight before turning on the flashlight. The water was very warm tonight, and I enjoyed the swim toward Levi's cave. I stayed close to the surface for as long as I could, but had to swim down to get to the underwater entrance. I had made it about halfway there when I felt something wrap around me. I tried to scream, an instinct, and my mouth flooded with water. The thing let go and I whipped around in the water and shone my light on it.

Levi winced and brought his hand up to shield himself from the light. I relaxed upon seeing that it was Levi, but then started to panic. I had lost my air when I tried to scream. Normally I could just barely make it to Levi's cave. I shone my light all around above me, trying to find a place that wasn't covered with cove rock. My chest tightened and I felt myself begin to panic once more. I swam up, trying to keep myself calm. Levi followed me.

I was out of air and I needed some now. Levi wrapped his arms around me again and rested his head on my shoulder, watching me whip my flashlight all along the bottom the rocks. He must not understand the danger of the situation. I turned to look at him and brought the hand up not holding the flashlight up and touched my throat. He wasn't looking at the gesture, looking instead at the bag I had tied to that wrist. He removed an arm from my waist to grab the bag curiously. My chest was on fire and my blood was pounding in my ears. I needed him to save me and now. I reached out and grabbed a handful of his floating hair. I yanked it hard toward me and he jerked away, making a violent noise that shook my body. He narrowed his eyes at me and I frantically gestured to my throat. He knitted his eyebrows together before they suddenly shot up. He looked shocked and then let me go.

I thought he was leaving me to die before he I felt him firmly grab my wrist and start swimming. Had I not been having frantic thoughts about making it to the surface, I would have been in awe of just how fast we were moving. His tail was flicking powerfully beside of me and his back fin was tucked in low. I looked at it for a moment before black spots popped up in my blurry vision. I closed my eyes.

I thought I would never reach the surface. However, Levi shoved me above water and I gasped over and over. He hugged my shaking body to his chest and whispered to me. I couldn't make out what he was saying over the blood pounding in my ears. He held me back a little bit and reached down to pull my legs up. He held me bridal style in his arms while I panted and coughed. If I wasn't in so much pain I would have been embarrassed about all the water and mucus I was coughing up and spitting into Levi's home. After a few minutes, I was able to hear what he was saying.

"…if you die on me, I swear I flip shit. You little brat that has to breathe and spit shit in my water. I can't believe you. Why couldn't you make it down here? How did you even make it down here before?-" He said.

I cut off with a loud noise that was somewhere between a scream and a grunt of annoyance. I let my head fall back and ignored the way this caused the salt water to run down my throat instead of out my nose. I stayed quiet.

"Fuck. Oh fuck." He said. "Di-did you just die? Eren?"

I peeled open my eyes and looked over at him. He let out a shaky breath.

"I thought that noise meant you were dying." He whispered before leaning down and pressing a kiss to my forehead. I blushed and he looked hard at my cheeks.

"Bank," I said, because it was all I could manage right now. My voice was scratchy and my throat hurt.

He swam me over to the bank and I wiggled out of his arms to get on it. Without his support, I slipped nearly underwater again before he caught me. I reached out with my legs to kick myself up and felt the smooth muscle of his tail. He jerked it away and placed his hands under my arms. He lifted me up like a little kid and set me on the bank. I untied my flashlight and bag from my wrists and slung them onto the sand before laying down on it myself. He slid up next to me and we lay perpendicular so he could stay with his tail in the water. I closed my eyes.

"Are you going to die?" He asked. I shook my head.

"That means 'no'?" He asked. Fuck, I would have to use my voice.

"I'm not going to die." My voice was raw.

"You sound like shit." He paused. "Did you almost die?"

"I don't know." I rasped.

"Why do you sound like that?"

"Salt." I had had way too much salt in my throat and that combined with the, um, thing that just happened made my voice hoarse. He was quiet for a minute.

"You need fresh water? Because you have too much, er, salt and it's hurting you and making you sound like that?"

"Yeah."

"There's no fresh water here that I know of." He sounded apologetic. "What about other, non-salty liquids?"

I opened my eyes and looked at his sideways face positioned over mine. What the hell was he offering me?

"Yeah." I said, mostly wanting relieve but also curious as to what he was offering me. He pushed off of his elbows and slid off of the bank. I watched his head disappear and closed my eyes.

I thought about what had happened. Now that I was safe, I could reflect on the sight of Levi swimming in the water. His hair floated when he was fully submerged and revealed an undercut. I had never noticed it before because of the way his wet hair laid on his head when he was out with me. I wondered about that sound he had made when I pulled his hair, too. It was almost a growl, and I made a mental note to ask him about it.

He splashed back up to me and held out a small ball with a blue tint. It was about the size and shape of a pear. I examined it in my hands while he laid some more beside us and got back into our previous position.

"What's this?" I croaked.

"Sea fruit. This is the kind that grows closest to my cave. Bite the smallest part there and suck the juice out."

I looked at it cautiously, turning it over and over in my hands. He sighed.

"This fruit's juice is what we drink when we are in human form, Eren. It's safe."

I looked at him and then took the smallest part into my mouth. I tested it by flicking my tongue over the soft skin of the fruit but tasted nothing but the salt water it was covered in. I bit through the skin and the fruit exploded in my hands. The juice ran all over my tongue and I almost moaned at how good it was. It was warm from being in the warm waters, but sweet enough that I didn't mind. It had the flavor of pear with a bite of star fruit. I sucked all the juice out and then Levi handed me another. I drank the juice from all five that he had brought with him and relaxed as the salt in my throat was washed away.

I sighed happily and stretched. Levi rested on one arm and watched me.

"Better?" He asked.

"Much better." I said, and my voice sounded a lot more like my own.

"Will you be okay?" He asked.

"I'll be fine. Just maybe don't ever scare me like that again?" I shot him a look.

"I scared you?"

"Yes. You scared me when you just grabbed me out of nowhere. I lost the air I was using to make it to your cave when you did that."

"'Out of nowhere'? You couldn't hear me approach you?"

"No! I can't hear things underwater!" This reminded me of the growl. I had heard that mostly through my body, as it was so forceful it shook me. "Also, why did you growl at me?"

"So humans can't hear well underwater?" He snorted. "Also, it's obvious I growled because you hurt me."

"I had to get your attention to save me!" I sat up angrily. "Why did you grab me in the first place?"

"I heard you swimming over to me and I thought I would watch you. You swim like a brat. It's bad." He barked out a laugh.

"I swim great for a human! I'm one of the best out of my friends!" I leaned forward a bit. "Most of the time I can make it fine, thank you!"

"You should stop swimming over here like that." He said. I gave him a hurt look.

"You don't want me to come over here anymore just because of a silly misunderstanding?"

"Eren, what I mean is that I should swim you down here. You can come the way you usually do, but when I hear you, I'll meet you close to the surface and then take you through the deep parts into here."

I was shocked. I was going to be swimming with a mermaid. Then something occurred to me.

"What if you're not here? I mean, the first times I came here, you showed up after me."

"Yeah. I've been helping Hanje with something, but today I made them let me go a little early. I figured you would show up at around the same time as you did the last two times, but you are really late."

I sat closer to him, hoping he would kiss me or let me play with his gills or something tonight.

"Mikasa didn't fall asleep til later today, which was kinda my fault. I don't sneak out until she falls asleep. Also, who's Hanje?"

He huffed and rolled his eyes. "A merperson friend of mine. They're basically a mad scientist."

I gasped and grabbed his shoulders. He straightened up a bit and looked at me with wide eyes.

"Can I meet them?"

"Fuck no!" He hissed. "They would drag you to their cave and do experiments on you. Absolutely not!"

I slid down beside him and bent my knees so my feet were in the water. "Can I meet someone else, then?"

"You really want to meet another merperson? Am I not good enough company?" His eyes shot down between us where my foot was close to brushing his tail.

"You are great company, Levi! I'm just curious. Wouldn't you like to meet more humans?"

He rolled his eyes. "Brat. No."

I laughed and then stopped when he reached his arm out and pulled me against his side. He kept his arm over me and brought his lips down to my cheek. I smiled goofily when he kissed my lips and he sighed.

"Stop smiling, I'm trying to kiss you." He tried again, but he could really only reach the corner of my mouth in the position we were in. We tried to adjust this way and that while still trying to kiss and I was getting frustrated.

"Hold on, let me try something." He pushed up off of me.

"What are you doing?" I whispered.

"My fin." He said and I looked at the fin on the back of his tail. It was a lot lower that it was usually and I gasped as I saw it tuck almost completely against his tail. He rolled over and laid on his back.

"Ow." He winced.

"Are you okay?" I asked him, trying to take my eyes off of his abs.

"Yeah. I don't like to keep my fin tucked in and I really don't like having weight put on it, but I think it'll be worth it." He patted his stomach. "I'm way too heavy to get on top of you, so you'll get on top of me."

"Okay." I eyed his stomach before crawling over to him. I swung my leg over him and straddled his hips where his skin gradually smoothed into gray scales. I leaned forward and put my hands on either side of his chest. He rubbed up and down my arms and I wiggled my feet.

"Oh fuck! Eren, don't do that." He whispered harshly as his eyes widened.

"Why?" I said, sitting back.

"Your feet are resting against my tail. Don't tickle it like that." He eyed my body and I blushed. His gaze was so intense I felt naked.

"Sorry." I said to him. I basically just tickled his dick and the thought made me turn red all the way down my neck.

"You're blood rushing. Why?"

I covered my face with my hands. "I am not blushing. Shut up."

"You are th-" He started. I put my hands back they were and leaned forward. I kissed him gently in the middle of his sentence and he returned it. I remembered all the things he had taught me yesterday and I did my best to demonstrate that I was a grateful student. I must have been kissing him well because he tangled his hands in my hair.

I kissed him sweetly until I felt his tongue at my lips. I squeaked and opened my mouth, letting him slip his tongue inside. He explore for a few minutes before he pulled back.

"Mmmmm… brat flavor." He smirked underneath me. I stuck out my tongue at him.

"Keep it up and see if you ever mate me."

He laughed and it I felt the shaking underneath me. I smiled at his laughing face and then sat up when I remember his mating cycle would be coming up soon.

"Levi, your mating cycle is coming up next week."

"It is. Are you for sure you don't want to spend it with me?" He rubbed up and down my sides. "I could see us having a lot of fun."

"I-I can't. Not this mating cycle." His hands rested on my hips and I had to stop myself from trying to grind down on him. "I was going to ask who you would be mating with, though."

"You want to know who I'm going to mate with?" He raise both eyebrows.

"You said there was a list…Is it Hanje?" I asked.

"God no! No!" He paused. "I'll most likely mate with Erwin or Mike."

"Can I meet them?" I asked excitedly.

"No." He growled. "You're mine."

I froze. A thrill ran through me at the sound of how deep his voice was. His gripped tightened on my hips then he relaxed.

"Sorry, sorry… full moon has me all aggressive. Look, Eren, I don't like the idea of bring Erwin and Mike here to meet you. Not so close to mating cycle. If one of them were to take an interest in you…" He squeezed my hips. "I'll let you meet Petra, though. She's really sweet; you'll like her. After mating cycle, though. Olou won't like his mate coming into a male's home so close to mating cycle."

"About mating cycle," I bit my lip, "How long should I stay away? I obviously should avoid the first night the moon is full and, what, four nights after that? Should I avoid visiting for a little while before the mating cycle?"

"You should probably stay away two or so days before mating cycle, all during it, and then maybe a day or two after it." He murmured while rubbing circles into my flesh. I wiggled and felt my thighs and feet brush up against his tail.

"Eren," he groaned. I couldn't stop thinking about taking my trunks off and rubbing on his tail. I wondered if we could fool around in this form. He could certainly play all he wanted with me. I would feel bad, though, being the one was received all the pleasure. I thought about his tail and gills again. Could I pleasure him?

I leaned back up to him and kissed him. While we were kissing, I moved my weight onto one hand and then brought my other hand up to his neck. He stiffened at my first touch. It took a couple moments of searching, but I found his gills. I gave gentle massaging motions on them and he gripped my waist hard. He growled into my mouth and pushed me away.

"I'm very aggressive right now, Eren. Don't tease me unless you want to end up naked." He said and his low voice made me whimper.

"I-I-I don't know, Levi." I was horny and he was like a dream come true, but I wasn't ready for this yet. I curled up a little and nestled my red face into his chest. He was dry now, but I could still smell the sea on his skin.

"Hey," he said gently. "Why don't we do something else? Show me whatever the hell it is you brought with you. I need to stretch out my fin, anyway."

"Holy shit! I can't believe I almost forgot!" I sat up quickly and scrambled to where I had the book. Levi rolled over and stretched his fin out to its full size. I took the book out of all of its bags and laid it on the sand in front of him.

"I recognize these markings mean 'mermaid'." He nodded to the cover.

"You can't read?" I said laying down on my stomach beside him and propping myself up on my elbows like him.

"Merpeople don't have much use for your written language, Eren. I can read the signs that are in the water because those are common knowledge to merpeople for safety purposes, but other than that I can only recognize a few words." He narrowed his eyes at the cover. "'Mermaids' is that word and 'Mermen' is that word."

"'Mermaids and Mermen," I read the title to him. "This is that mermaid book."

He nodded. "That word in between 'mermaid' and 'mermen' is 'and'?"

"Yeah." I flipped it open to a specific page. I pointed to the mermen with the dark blue tail and eyes and black hair. "He looks like you."

"What? I'm grey. Mike is the one who's dark blue." He snorted. "I'm way prettier than him."

I laughed. I read half of the book to him that night. He occasionally asked me to show him specific words and sometimes interrupted with corrections. Mostly he looked as fascinated as I did the first time I had read it. "So this is what humans think about us" He had said. I pointed out the light blue tailed mermaid and joke about Mikasa loved that one.

"That's Annie." He said, looking at me suddenly. "Who made this book? How do they know exactly what Annie looks like?"

"Wait. Mikasa's mermaid crush is real?" I pointed to the mermaid. "This is an actual mermaid you know?"

"Yes. Look at the dead look in her eyes, the hair clipped back, hell, those are even her tits... This is Annie." He reached out and flipped through the book. "Holy shit! This one looks like Nanaba. This one looks like Gunter."

He looked at me shocked. "Where does this author live?"

"I don't know, let me see what the book says." I flipped to the about the author and read it to him.

The Sina Environmental Agents, or S.E.A., live and work in Sina and are dedicated to all matter of Sina environments, above and below water.

"They live here." I said to him.

"Fuck me. Show me that one that looks like me again. I think it's fin is fucked up like mine."

I flipped back to the dark blue one and he put a finger on the fin on its tail. I hadn't noticed before, but it was drawn with a piece missing.

"Yup. That's supposed to be me. No one else has this fucked up fin." He raised his tail out of the water and I looked back at it. On his right side it looked like something had ripped a piece of his fin off.

"Holy shit. What happened?" I asked before I could stop myself.

"I tried to protect my little sister from mermaid hunters." He paused. "Tried."

I just stared at his sad face. I didn't know what to do. He looked at me once before looking down.

"Her name was Isabel and she had a tail the color of your eyes. They chopped it off. A couple days later I found the rest of her body. They threw her back in after they cut off her tail." He said quietly.

"Oh, Levi…" I whispered to him and leaned over and kissed every part of him I could reach with my lips.

"Should I tuck my fin back in?" He asked huskily as my lips got near his gills.

"Yes." I kissed his gills and he moaned. I glanced back and saw his trembling back fin tuck away before he rolled over.

I climbed on top of him and he pulled me close.

I was really starting to like Levi.