When Izuku arrived at the home of his father, he was amazed at the fact it was so big. He lived in an apartment for all his life so far. Such a massive change would leave anyone in awe. Izuku was found walking looking in awe of everything from the floor to the walls to the ceiling. Everything was just so amazing and different from what he was used to when it came to living environments.

"This is your room Izuku." Endeavor directed Izuku.

Izuku's eyes widened. The room consisted of a bed that was pretty average, a screen TV, the newest version of the PlayBox (XBox and Playstation fusion), walls covered with several posters of heroes although there were a lot of posters showing Endeavor and none with All-Might, hooverboard, a radio, computer, and desk. It looked better than his old room with tons of more space. It was spectacular!

"Like it?" Endeavor asked.

Izuku looked up at Endeavor with a wide smile on his face.

"Like it? I love it!" Izuku squealed as he ran into the room.

Endeavor had a smile on his face and left Izuku to enjoy his new room. Some time later, Izuku grew hungry and decided to ride his hooverboard into the kitchen. When he made it into the kitchen, he saw a boy with red spiky like hair. When the boy turned to see Izuku, Izuku was surprised at the resemblance the boy had to his father. The boy smiled at Izuku, but it wasn't a happy smile. It was one filled with bitterness.

"You must be Izuku. My name is Toya. I am your eldest sibling. Nice to meet you."

Izuku nodded before getting off the hooverboard.

"You okay?"

"O-Of course I am. Why wouldn't I?"

"Well. You seem upset. Maybe a nickname would cheer you up. How does the nickname Dabi sound?"

Toya was surprised at the gesture. From how his father treated Izuku so far, he thought he would be a spoiled brat that got their father's affection, but now the boy was giving him a nickname. A nickname he found to be pretty cool.

"It sounds cool. I should give you a nickname as well. How about the nickname Izu?"

"Sounds good."

"Cool. Want to see my Quirk?"

At the mention of the word, Izuku got excited and nodded his head rapidly. Toya laughed and began to demonstrate his Quirk. Blue flames began to appear dancing in the palm of his hand. Izuku noticed how Toya was able to craft his flames into intricate animations of animals and he was amazed at the fact it would have to take a lot of skill in order to do something so complicated.

"Wow Dabi! Your Quirk is so cool! I can only imagine how much time and hard work you would have had to go into being able to make your flames move like that."

At the mention of 'hard work' Dabi had flashbacks to the times when his father would force him to train like his life depended on it. You could say it did when your father was Endeavor. Dabi frowned at the painful memories, but he shook his head to get rid of the thoughts.

"A-Anyways, how about your Quirk? I heard you have a versatile Quirk. Let's see it."

"Ok."

As soon as he said that, Izuku sprouted wings made of fire accidentally burning off his shirt. His arms began to blaze and Izuku formed a ball of fire. Dabi could see flames starting to form around the rest of his body as well. His face started to become engulfed in fire actually. One of his eyes was glowing red.

'He looks...like a demon.' Dabi thought.

He knew he had no reason to be scared of his little brother, but the form Izuku was in right now just looked so menacing despite the height difference. He could only imagine how intimidating Izuku would look when he has his growth spurt. He felt sorry for what father would do to him and he wasn't sticking around to see that.

Izuku shut off his Quirk and breathed heavily. He opened up the fridge and took out a bottle of water that he chugged down. The little bit left, he poured over his head. As soon as it made contact with his skin, steam could be seen coming off of Izuku.

"Forming fire on my body causes my body temperature to rise at a steady rate. I only just got out of the hospital so I'm not at 100%. I could probably do better in the future though." Izuku explained.

Dabi nodded before leaving the kitchen with a Gatorade Icy Blue.

*Line*

It was a couple of weeks since Izuku came back from the hospital and was adjusting decently to the new environment. Some of his siblings were pretty friendly. Natsuo and Fuyumi. Others were more distant, but still talked to him. Dabi. Then there was that one sibling that had yet to adjust him. Shoto. The sibling he met first. Anytime Izuku tried to talk to Shoto, he would either ignore him or go to a different room. Izuku had no idea why though.

One day Endeavor called Izuku and Shoto to the dojo. Izuku was confused as to why, but the look on Shoto's face showed absolute fear. It gave him the impression that this wasn't going to be something good.

"Now that it's been a few weeks since Izuku has been discharged from the hospital and it's been deemed safe for him to participate in physical activities, the both of you will begin sparring with me. A tag-team of the sorts. Good luck." He smiled saying this.

This wasn't one of those warm smiles he gave. Izuku didn't feel good at all. He didn't want to be here. He thought about running away, but Endeavor seemed to have read his mind and locked the doors. Now they were trapped until the training session was over. Oh boy.

"Ready! Set!"

Endeavor didn't even finish what he was saying before a trail of ice went at him. Endeavor smirked and used his flames to melt them.

"You're going to have to do better than that Shoto."

Izuku thought about maybe absorbing the fire from their father. Perhaps it could work. After all, it worked on Katsuki although the force was still there. Wait. Katsuki. Izuku curled up his fists at the thought of his ex-friend.

Shoto noticed this and pondered what could possibly be going through Izuku's mind right now. Surely he wasn't dumb enough to charge in guns ablazing. Right?

Izuku was breathing heavily and his body began to catch on fire. His wings appeared and as soon as they appeared, Izuku used them to fly and launch at Endeavor. Endeavor was surprised at his actions while Shoto simply facepalmed at what Izuku was doing.

"Oh? What's this?" Endeavor questioned before 'gently' smacking Izuku away.

What Endeavor wasn't expecting was for his flames to move towards Izuku and leave his body. He found this odd at first before he remembered that Izuku could absorb all forms of fire. Perhaps this was his plan. Shoto had the same thinking process and realized that Izuku left Endeavor open for an attack now that his flames were gone.

'Now's my chance!' Shoto thought.

He launched ice at his father hoping to catch him off-guard… He didn't.

"Haa!" Endeavor shouted while shooting a fireball at the ice countering it. Shoto growled in frustration. His eyes widened a little when he saw Izuku getting up from the floor and forming a fireball. The position he was in though seemed weird.

'Maybe I could.'

"Kame-" Izuku whispered while a fireball was forming in his cupped hands.

Endeavor noticed the slight widening in Shoto's eyes, but he brushed it off as nothing important. He also figured Izuku was already out like a light so he didn't worry about him too much for now.

"Come now Shoto! Surely you could do better than that!" Endeavor tried to encourage.

"Hame-" Izuku whispered.

Endeavor went on to start walking towards Shoto and began to flame up again. He then started running towards Shoto. The young boy's eyes widened in fear as he tried to run and avoid his father's attack. His father was too fast though. He was caught. He braced himself for the pain to come. Then he heard Izuku yell.

"HA!" Izuku yelled.

A fireball bigger than Izuku's entire body was sent directly at Endeavor hitting him in the back and launching him into the wall. Endeavor was left pinned in the wall shocking both Shoto and Izuku. Shoto looked back at Izuku to see that while he was shocked, his legs were also wobbly and he was struggling to stand. Such a powerful attack coming from someone his age would probably leave them in that sort of state or worse. Shoto respected Izuku a little for saving him from excruciating pain, but that still didn't mean he liked the boy. It did mean he saw Izuku in a bit more of a positive light though. It was a start.

Endeavor peeled himself out of the wall and looked over to see Izuku. Rather than being mad like other people would, he laughed.

"Well done Izuku. I wasn't expecting for you to be able to launch such a powerful attack at this age. I can only imagine how powerful you'll be when you're older. Same for you Shoto. Right now though…"

Endeavor went at Izuku with his flames appearing punching the boy in the stomach, but Endeavor's flames went to Izuku again. Izuku got up from his position on the floor and wobbled to Endeavor. He grabbed the older and taller fellow by the leg. He decided to try something.

Endeavor tried to flame on again, but for some reason, it wasn't working. He looked down to see Izuku was no longer on fire, but he could see his veins glowing orange. Izuku was breathing even heavier than before. Actually, he was wheezing. Now Endeavor was concerned for what was happening to Izuku. Then Izuku's whole body glowed before he could feel an intense amount of heat coming off of Izuku. That's when Endeavor realized what was happening.

"Oh no."

*BOOM*

While not a huge explosion compared to others, it was still big enough to send Endeavor flying. He flew to the other side of the room and could feel that a few of his bones cracked. He wasn't upset though. He actually laughed through the pain.

"Yes! That's it Izuku! I knew I didn't make a mistake in adding you to the training sessions! Now, training is over for today, but we are going to continue once my bones fully heal."

Shoto was shocked at the fact Izuku was able to actually injure their dad to the point where he would stop the training session. Usually, it would be the other way around with Shoto being too injured to continue. Today he was still able to stand. Maybe having Izuku around wasn't so bad after all.

Now that Shoto thought about it, he wondered how Izuku's condition was. When he glanced over at Izuku's position on the floor, he saw that the boy was actually unconscious from the combination of the pain from sparring against their father and absorbing too much fire into his body causing the explosion to happen. His body couldn't take that sort of stress yet. At the very least he was still breathing and he wasn't in critical conditions. That's good.

"You've earned some of my respect Izuku. Let's see where time takes us." Shoto said while staring at Izuku's unconscious body.

A/N: It's been a good while since I updated this story, but I don't care. Dabi is 8 years older than Izuku and Shoto. I'm also a firm believer in the Dabi is a Todoroki theory. Now, something has been bugging my mind for a while now. How does a guy who's Devil Fruit powers enable him to make any part of his body explosions waste his powers so badly? Looking at Bakugou, he can only make explosions from his hands, but he can use it far more effectively than Mr. 5 ever did his powers. Just imagine if Katsuki had those Devil Fruit powers and how powerful he could become. Also, I plan to make a One Piece fanfic eventually. What Devil Fruit should Luffy get? It can be made up or canon. I don't care. Give me your thoughts. Next story to be updated is Project Saiyajin on Wattpad. Those that are reading this on , my name is the same on Wattpad. Bionic-TitanX out!