You know how this goes! Enjoy!
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The boat returns to shore, the sun no longer up. Everyone gets off the ship, one by one they got off, saying a 'good luck,' and a 'farewell,' to the happy couple. (Y/N) would smile and return the kind words, but Katsuki wouldn't, he didn't see the point in talking to these extras at the moment, after all his attention was on the love of his life. He wanted to be alone with her, he wanted to tease her, he wanted to....well...let's say he wanted to lots of things with and to (Y/N). However, he has to wait as the kind (Y/N) kept saying goodbye to everyone.

Oh how he hated this. He wanted to put her over his shoulder and take her to their shared room. The room they had been sharing for about a year now as her father wouldn't allow it at first. Katsuki pretty much had to swear he wouldn't do anything to the kings daughter till they were married. But that didn't stop him from teasing her when he got the chance. The only two people he acknowledged was the king and Shinso, but they were one of the first to leave the ship, so to him this was a waste of time.

When the last person finally got of the ship Katsuki immediately picked up the soon to be queen bridal style. "Katsu?" She questioned, using the nickname she had given him. Katsuki didn't answer however, instead he immediately started to walk to the castle, once inside he went down the halls and soon was in front of their shared bedroom. He kicked open the door and walked it. Before (Y/N) could scold him for doing that she was thrown on the bed.

She looked at her husband as he shut the door, now having the chance to scold him for kicking the door,"Suki! Why did you kick the door? I told you to stop doing that as you are going to break it." She used another nickname, Katsuki sighed at this as he knew his wife probably had so many for him and probably would give him more as time goes on. He walked over to her without saying anything. He climbed on the bed and pushed her down, climbing on top of her. This shut her up, her face went red as she looked at her husband wif was now above her.

Katsuki smirks, oh that smirk, the smirk that always caused her to become weak, the smirk that always meant she was gonna be teased. "(Y/N)~" He said in a seductive tone, "You made me wait, you made me stand out there as you said goodbye to those extras, I think you need to be punished~"The soon to be queen face turned a darker color of red as the future king spoke, "I had to wait four years for this so I hope you are fucking ready~"

He leaned down and kissed her. Their eyes closed as their lips connected. By the time he pulled away she was panting. Katsuki was happy with his work. A red faced (Y/N) who was panting from the kiss, how beautiful. He lowered his head and started to kiss her neck causing quiet moans to escape. He pulled away from her neck and leaned close to her ear and whispered, "Hope your ready as I won't be nice about this princess~"

(Y'all really thought I would right a lemon, huh? Thirsty children! Take the Bible! Save your souls!)

The sun rising and hitting her face caused the princess to stir. Her eyes open, squinting slightly at the suns brightness. She tried to sit up, but realized she couldn't, after all Katsuki had a arm wrapped around her waist, keeping her in place. He was behind her, her back to his chest. "Kataski. It's time to get up." She says, "We can't sleep all day." She kept talking which eventually caused a groan from Bakugou. He slowly opened his eyes, but his grip didn't loosen, instead he pulled her closer, "Morning stupid..." He says causing a giggle from (Y/N), "Morning you pomeranian." Katsuki rolled his eyes and carefully unhooked his arms from her waist and sat up, (Y/N) does the same and sits up.

She had completely forgot that she had nothing on, but Katsuki didn't mind after all he loved looking at her body. He looked at her and his eyes traveled her body. Her body was covered in bite marks and hickies. "(Y/N) you look fucking fantastic." He says while licking his lips. (Y/N) was about to say 'thank you' before she was pushed down onto the bed and he hovered over her, "How about another round?" He asked. He bent his head down and kiss her. (Y/N) and Bakugou didn't leave their bed that day.

As the days, weeks, and months, specially three months that pass something odd was happening to the soon to be queen. Her belly started to grow and she woke up sick. She had odd cravings and she had bad mood swings. She went to the doctor and discovered she was three months pregnant. Her eyes widen at this....three months...three months...she and Katsuki had only been married for three months. She couldn't believe this, she didn't think she would get pregnant this easily, but she wasn't against this. Oh no! She was excited.

The queen wished a year or two passed before she got pregnant, but she still didn't mind. Now the real fun part was going to tell Katsuki and everyone else. This child was going to be the first. The first child between land and sea. She thought for awhile and tried to think of the best way to tell Katsuki, her father, Shinso, and ect. Then it hit her, the boat ride that is two weeks away. They are heading out to talk to the sea king that day. It was the perfect time. So the future queen made sure her belly was hidden enough so no one would point it out.

She continued to wear baggy clothes each day of those two weeks, no one said anything, but they thought it was odd. Katsuki thought it was extremely odd as he didn't know why she was suddenly just wearing baggy clothes, but he didn't say anything as he was busy learning with the king. He had to if he wanted to be crowned king in a month.

The two weeks pass and she wore her normal attire. Her pants, shoes, but the shirt she was wearing was white and slightly bigger than usual. Katsuki, (D/N), Shinso, Izuku, a few servants and herself were on the ship. Katsuki and (Y/N) talked to everyone as the ship went out to sea. When they arrived at the meeting spot Masaru, Aizawa, and kirishima came above the water when they noticed the ship. Masura used his triton magic to life them on the ship.

Katsuki pulled out a bowl that was filled with water and placed it on the railing of the ship. Kirishima was placed inside and Aizawa was just placed on the railing. Now above the ship Denki was flying. He had follow them as he wanted to talk to his dear friend. He had flow down and landed on the railing beside Kiirshima. Katsuki only chuckled as he saw his friends before watching the two Kings shake each other hands.

Now (Y/N) was in one of the rooms of the ship trying to calm herself down as she prepared to tell them. She went into the room not long after going out to sea. After composing herself she went out and waved to everyone and greeting them. She went over to Bakugou after about 10 minutes and told him she had something to say to everyone. He nodded at this and yelled at everyone to listen up as his love had something to say.

"Ok I am sure everyone on this boat excluding Aizawa, Kirishima, Masaru, and Denki have noticed that I have been wearing baggy clothes for the past two weeks and there is a reason for it." She watched as everyone had a curious expression on their faces, "And you know me and Bakugou have been married for only three months." She looked off to the side not sure how to get this last part out so she decided to take her hand and pushed down on the shirt, causing it to show off her belly. It was obvious it had gotten bigger.

Everyone eyes widen at this, but what she says next causes a chain of events, "I'm pregnant and I am three months along so yeah." Her father faints, Shinso laughs saying he knew it, the sea king placed a hand on his head, Kirishima and Denki cheered, the servants congratulated the two, Izuku ran around and barked happily at the news. However Katsuki was in a state of shock. He looked at her belly before looking up at her. He immediately walked in front of her before placing his hands on her shoulders, "Your-your begin serious right? No jokes?"

(Y/N) giggled and nodded. Katsuki removed just hands from her shoulders and places them on her belly. His reaction wasn't what she had expected. She thought he would yell, pick her up and spin her. But this reaction was wonderful. His eyes were on her belly with love in them. "I fucking promise to be the best goddamn dad ever." He promised to (Y/N) and the unborn child.

Now you would think he wouldn't change right? He would still be the same Katsuki as he was. Nope! He was now a Katsuki who was 100% more protective. He had to be with her all the time, if he wasn't someone else was. If they went out to town he watched everyone and everything. It did not matter. Everything in this world and universe was a threat. You bet if (Y/N) tripped on a rock it he would pick it up and use his quirk to destroy it.

His baby and his wife had to be protected at all costs. They were his world now and nothing was gonna take them from him. Now despite Katsuki protectiveness the month passed pretty smoothly and today was the day they would be crowned king and queen. She had to wear a dress much to her dismay, but it was alright has it made her belly more visible, there was no denying she was pregnant. The king crowned the two and placed the crowns on their heads. Everyone clapped and (D/N) walked off to the side as everyone cheered for the new king and queen.

Katsuki and (Y/N) separated for the moment. He went off to talk to (D/N) and (Y/N) went off to talk to Shinso. Katsuki watched his wife from the corner of his eye the whole time if they weren't side by side. As the day came to a close (Y/N) and Katsuki went to their room and changed into their pjs. The now queen laid on her bed on her back while Bakugou was carefully rubbing her belly, excited and nervous about meeting the bundle of joy.

Now here is where the queen was ready to throw Bakugou out of a window. As the months pass and her belly grew Katsuki started to act like a rabid guard dog. She wasn't even allowed to go into town anymore, she couldn't go for walks, she couldn't go to the beach. Pretty much anything he saw dangerous she wasn't allowed to do. It was now month eight. She was able to drag Katsuki off from his duties into their room where she started to tell him he needed to relax and stop with all the guarding.

Katsuki fought back saying he had to keep them safe. The queen however used something Katsuki barely ever used...common sense. She explained that their child will get hurt, that the child will learn about how cruel the world could actually be. Katsuki sighed and agreed. "Ok...I will hold back on the guarding, but could you just stay in the castle where I know you will be safe? No one will have to be with you anymore, I just want you fucking safe till the baby is born."

(Y/N) nodded, "Ok I can live with that. I know why you are worried Katsu. I know you are worried something will happen to us, but nothing will. It's our child after all. And don't forgot who saved your ass when we had to verse Shigaraki." She says, smiling as Katsuki chuckled, "Ok, ok, I get it. I was a dumbass who took the protection of you a little to far, but if you were me you would act the same fucking way."

The queen rolled her eyes, "Whatever and just know you will stop that cursing when the baby is born. I don't need the baby to have your wonderful vocabulary." Katsuki then rolled his eyes, "Oh please their vocabulary will be even more wonderful than mine." The two smiled at one another has they joked around. It didn't matter to these two that Katsuki still had work to do, after all they were to busy getting lost in their own world with one another.

Today was the day! What day is it? The day the baby will be born of course! The queen water broke and everyone was in a panic, specially Katsuki. He wasn't allowed to be in the room with her as the baby was begin born. He heard her screams and yells as the baby was born. It wasn't till a hour had passed when he was finally allowed in the room. He saw his wife holding his child. A child that was wrapped in a pick blanket. He walked over and looked at his child. His ruby eyes met his daughter ruby eyes. He smiled as he looked at her. He even noticed she even as a bit of blonde hair on her head.

In his eyes his daughter was so beautiful. (Y/N) soon handed the child to her father. Katsuki panicked at first as his daughter was small and fragile. He was worried he would hurt her, but that soon faded as he held his daughter close. (Y/N) smiled at the sight. She knew that those two would be close and she was totally ok with that. (Y/N) soon asked a servant to get her the book filled with baby names as the two were idiots and didn't plan any name ahead of time. The two looked through the book and they settled on the name Katsumi. Katsuki liked it as it meant victorious beauty and the fact it was similar to his name.

(Y/N) placed the book down and Katsuki handed the child back to her. She held her child close and Katsuki got into the bed with her. Both talked about their child and how their child would do great things.

A month passes. The queen, king, the newborn princess and many others were on a boat heading to the meet spot. After all the child still had to meet her other family, the family that lived under the sea. In a room on the boat little Katsumi was in a crib that had a green shell on the back of it and a little Mobil with sea creatures on it. Katsumi was wearing a white-and-pink christening gown and a bow with the same colors. Her mother was wearing as you guessed it a dress. She didn't want to wear a dress, but Bakugou had gotten it for her and pretty much had to beg her to wear it so it was on her, Bakugou had also promised her if she wore it she wouldn't have to wear one to the party they were gonna have when Katsumi turned 10 so it was all good.

Her hair is in a low ponytail and her dress was a gold and white. She was also wearing gold high heels and a white bow in her ponytailed hair. (Y/N) was humming before picking up her child. She started to sing as her child smiled at her mother. "You are my world, my darling. What a wonderful world I see. You are the song I'm singing. You're my beautiful Katsumi, my little melody."

The door opened and Katsuki walked in. He was wearing a suit that was gold and white, it matched his wifes dress. He had black shoes on and had a sword to his side. He smiled when he saw his wife singing as he spoke, "Darling, we'd better be going." Bakugou walked over to his wife. "Look at her, Isn't she glowing?"  The queen asks as the her daughter reaches for her father, "She looks divine and you look exquisite, but look at the time." Bakugou used one hand to wrap around his wife as they walked to the door,  "Couldn't be, Is it?" (Y/N) asked as Shinso appeared at the door frame.

"The crew is awaiting your orders." He says letting the two pass him. The two headed for the stairs and started to walk down them as the captain at the wheel sang, "We're sailing away
from our borders!" A sailor pulled on a rope, "Steady, boy, steady!" A sailor with a telescope yelled, "Ahoy there! They're coming!" Shinso modded and sang with a smile on his face, "Trumpeters ready! Drummers, start drumming!"

The trumpets play and the drummers play. Katsuki takes his daughter who's smile seems to get bigger as her father sings, "Down to the sea we go. Down to a world I know. There's never been not ever before. A child born of sea and shore." Then others join, "Down to the sea we go. Down to the world below. A journey to bless a princess-to-be! Under the sun and under the sea!" He sang, smiling happily at his little Katsumi.

Now under the water a fish noticed the ship. He swam down letting the other sea creatures know, "Katsuki's coming!" A sea turtle looked at the fish, "Katsuki's coming?" He asked as the fish nodded before going to a another fish, "Katsuki's coming!" Soon the fish started to tell one another.

-"Katsuki's coming?" A little fish asked.
- "Katsuki's coming?" Then another,
-"Katsuki's coming?" And another.
-"Katsuki's coming!" Before a clown fish said it.
-"Katsuki's coming!" A dolphin swam up with other fish has they sang with others.
-"Katsuki's coming!"
-"Katsuki's coming!"
-"Katsuki's coming!"
-"Katsuki's coming!"

The sea creatures swam together up to the surface. Some creatures were playing instruments and Aizawa was there leading them, before he started to sing himself, "What's all the big commotion that's spreading through the ocean? From sea to shining sea. There is no hesitating!  Today we celebrating. Katsuki's melody! Oh his little Katsumi! Today when Masarus son comes back here to the water!"

He swam around and landed on a octopus shells that the creatures used for drums. He picked them up, but left one. "We gonna have a spree! Ha! The boat is nearer now I think I hear her now, Katsuki's melody!" The octopus took the last shell causing Aizawa to float up. He started to follow the rest of the sea creatures to the top.

Other fish start to sing as well, "La-da, da-da, di-da-da! La-da, da-da, di-da-da! Ohh-oh! La-da-di-daaah! Yeah! La, la-da, di-da-da! La-la-la! La-da, di-da-da! La-la-la! La-la, la-la-la!" Now at the underwater castle the merpeople start to swim to the top as well along with their king. "Up from the sea we rise! Up to the world of skies! There's never been, not ever before! A child born of sea and shore! Up from the sea we rise! Up to the world of skies. Forever to be together as one! Under the sea and under the sun!" The merfolk come up above water to look at the boat while a certain seagull flew over head and landed on the boat...well crash landing on the boat.

He looked at the baby happily as Bakugou held her. He walked to the edge as his father came up to the surface. Katsuki held his child close as he sang, "This is your world my dear brat! One world The land and sea! My hope for you for always is that your heart will hold part of me." His daughter looked at the merfolk before looking back at her father, the humans started to sing and the, "Down to the sea we go." The the merfolk joined, "Up from the sea! Down to the world below!"

Aizawa climbed up the boat from the anchor chain and smiled when he saw Katsuki and Katsumi. But his attention changed when the king used his magic to rise up and look at his son and granddaughter. Soon everyone started to sing together, "Together we come
forever to be. Under one sun! The land and the sea!" Masaru poked his granddaughter nose causing her to giggle. He looked at Bakugou who looked at him. The two were smiling at one another and focused, the triton in his hand glowed. He swung it and had he did so a rainbow appeared.

Everyone stopped singing as the sea king spoke, "My precious Granddaughter Katsumi." He says as a merman soldier came over holding the gift. Masaru uses his magic to lift up the gift. "I'm giving you this locket so that you will never forget that part of your heart will always belong to the sea." He says, opening it as it showed the under water castle. He closed it and everyone could see it had her name carved on it. He handed the locket to the child who immediately started to chew on it.

Everyone had a good time till Katsumi suddenly was taken out of her fathers hand. A man who had a dark purple tail, a bird shaped mask. He held the child. Playing with her, "Katsumi!" Katsuki yelled glaring at the intruder. The man played with a child, "A party? How fun. How come I wasn't invited?" He asked as he was using his own abilities to float about the water. Which really was a spell he had casted. Underneath him was a shark. Aizawa couldn't believe it, "Kai! The used to be leader of wizards and witches!" The man, now dubbed Kai rolled his eyes, "Overhaul. It's overhaul. You crustacean."

He says still holding the child, "Now I didn't miss the cake and ice cream, did I?" He asked as Masaru held the triton and pointed at the man, "Kai! Surrender the baby,or I'll..." He was interrupted as he held the child out right above the shark, "Uh-uh-uh." He says as Masaru was glaring at him, "Shigaraki would have simply loved to have come...but something came up. Now-Now, what was it? Oh,yes. You all shish-kebabbed him. One minute you're on top, the next you're sushi. Now, is that fair, King? I ask you. But then, whoever said we had to play fair? Oh, Chronostasis!"

The shark moved closer to where overhaul was. "Now hand over the trident, or your precious granddaughter...will be shark chow." He says in calm tone. Masaru let the triton fall and Katsuki watched shocked, he was scared, he couldn't lose his Katsumi, his melody. The sea king then spoke, "You can have anything you want. Just don't harm little Katsumi." The sea wizard laughed, "Well, well. I get the trident...avenge poor,unfortunate Shigaraki...and gain all the powers of the ocean. And it's not even ten o'clock. Not a bad morning." Overhaul went and sat on the railing of the boat. The people back away as he does so.

(Y/N) wasn't going to allow this to happen, not on her fucking watch. She looked at overhaul as he moved to take the triton. She looked at the sail and god, a idea came to her. She reached over Bakugou and grabbed his sword. She pulled it out and cut a rope causing the sail to turn, "Hit the fucking deck!" Katsuki yells as he noticed what his wife was doing causing all to quickly duck. Now since overhaul was close to it he got hit. This causes him to drop Katsumi. The shark jumped up ready to eat the child, but Katsuki used the free rope to jump and catch his child while his father used the triton to shrink the shark into a tiny fish. Bakugou landed on the ship and (Y/N) dropped the sword and ran over to the two. Making sure both were ok.

Now the used to be shark was yelling, "What have you done to me? Look at me! I'm an anchovy!" Chronostasis yells, not happy about this. Overhaul used this chance to pull out a potion, "This isn't the end, Masaru! It's just the beginning!" He says as Chronostasis swims over to overhaul. He pours the potion into the water, causing it to wrap around them. Once the water went back to normal no one was there.

The sea king yelled, "After him!" The merfolk soldiers quickly dived under the water, but they all heard the warning, causing Katsuki to hold his child tightly. "You'll never find me, but I'll find you...and your precious granddaughter!" Says overhaul, even though he was no longer seen. Masaru saw how worried the two word, he wanted to ease their worry so he says, "We shall not rest until that mad man is vanquished. Find him! Find him!" He says as used triton to cause lighting to hit the sky.

Katsuki and (Y/N) were at beach as their daughter played around with the sand. It had been a few hours since the incident. Aizawa and Kirishima are with Masaru at the castle about overhauls disappearance. "I'm sorry. There is no sign of him, he's vanished." Bakugou is worried and Katsumi crawls to the sea. "We'll keep trying, we'll-" (Y/N) watched as she noticed, but Katsuki got to her first. "Katsumi, no." He pulls her out of the water. "We've got to keep Katsumi away from him. Until that bastard is found, Katsumi can't go into sea. And neither will I." Katsuki says, shocking everyone. "But, Bakubro."

Katsuki lgot him off, "Fins for brains, listen if overhaul is anything like that dead bastard crusty lips then he'll never give up. This is the only way. Katsumi can't know about Merpeople or Atlantica, or even you, old man." He says, taking the locked off his daughter and hands it to his father. Masaru sighs, defeated. He knows his son is right, "Very well, Katsuki, you're right." He then turns to Aizawa, "Aizawa, you will watch over her." Aizawa felt de ja vu as he sighs, "Me? Will I ever catch a break?" He asks swimming to the shore as Kirishima and the king leave. Masaru watched his son, daughter in law and his granddaughter head for the castle, Aizawa not far behind. He looked at the locked and threw it. He went under the water, upset that this was going to be the last time he might ever see them again.

The months pass and a wall had been built with the help of the sea king. It blocked the land and sea. It kept Katsuki's daughter, his Katsumi, his melody safe and he planned to make sure she was gonna stay safe even if he meant she would hate him.