Black clover x male reader: My own kind of Magic

What Am I?

"I'M AST-" He started to open the door, shouting. Right as he did, a large explosion went off, the entire door enveloping in flames and a large, strong gust of wind flying at us. I probably would have been knocked over if Gordon hadn't been behind me to steady me. Asta flew over Yami's head, hitting the ground with a thud.
"This is us, the worst of the worst Magic Knight Squads, welcome to the Black Bulls." Yami said this while turning to us. I had to say, with the flames behind him, he looked really hot. Like literally, he was really close to that fire.

"I'M NOT DONE!" Asta got up, spitting out some dirt and started to charge towards the wall of fire.
"Asta-" I called out, trying to warn him, but my voice fell on deaf ears. Without a second's notice, a large fireball flew through the flames, making Asta dodge to the side, and Yami pull me out of the way, thankfully. After that, I gazed into the decrepit castle through the no longer existent door. What I saw inside both surprised me, and made me smile a little bit. There was a large variety of people. Two were having a very intense battle, one was a very hungover girl, another was stuffing her face with food,  one was just breathing heavily, and the last one was muttering to a mirror about someone named 'Marie?' Regardless, I couldn't help but smile at the lively personalities, although I was nervous.
The rest of us stepped in through the hole in the wall, taking them all in. Finral said the word 'again' which makes me think this is a regular occurrence. Asta then tried to introduce himself multiple times, but he kept getting ignored, the two people fighting causing more and more damage.
"STOP BREAKING THINGS ALREADY!" Yami slammed his fist into the wall, shattering it, but successfully getting everyone's attention. I couldn't help but jump behind Finral at his sudden outburst, he was scary. Thankfully, Finral was the only one who noticed.
After about two seconds everyone was gathering around Yami, fawning over him like kids when their dad comes home, it was sweet.
"You good?" Finral whispered to me and I just nodded, stepping out from behind him, but staying quiet.

"Now, these two are our other new members. Introduce yourselves." Yami motioned towards us.
"I'm Asta from Hage village!" "Hage? That's out in the middle of nowhere?" The guy with glasses said.
"I-i'm Y/n...im...from the sku-....Hage v-village.." I stopped myself from saying the skull, and opted for Hage instead. While I was talking I stayed behind Asta, embarrassed and crazy nervous.
"You're both from Hage?" The girl with too little clothing asked, only receiving a nod in return.
"Finral, introduce everybody."
"You guys already know Gordon," He started to introduce everyone, telling a flaw but then saying that their good people. At one point the guy with the mirror shoved a picture of a little girl in Asta's face, I got to see it since I was behind him.
"You see this, this is my sister Marie. She-" "She's an angel." The two of us said the same thing. He paused and looked at me weird before threatening Asta. Once we got through all of the new people, Finral introduced Yami, formally, although it was lacking 'but he's good people.'
Asta once again yelled a loud introduction, screaming that it was nice to meet them.
"Astaaaa...." I whined quietly, tugging on his sleeve. "Huh? What is it?" I just put my finger to my lips and shushed him, but he seems to get the idea. "Oh right, sorry." I could normally handle his yelling, but this stress and anxiety of everything else, it was a lot. It seemed that Vanessa appreciated it, having something called a 'hangover?'

I wasn't really paying attention to what happened next, but somehow me and Asta got roped into some sort of test against Magna?He started yelling at us to do some ridiculous work out things. "Uh...what's a push-up?" Everyone seemed to just stare at me, it bothered me alot, I felt like they were judging me. "J-just forget I asked..."
"It's when you do this!" Asta showed me, doing a work out I had seen him do a hundred times. "Oh, that's what it's called, but isn't this better?" I got down on the ground in the push-up position before raising my legs and doing them in a hand-stand style. Now everyone was staring at me with a different expression.
"Or not..." I mumbled and stopped. After a moment of silence we continued with the initiation, doing a bunch of odd tasks. Eventually we reached the last task, a fight against Magna. Asta was first, so I stood on the side next to Yami. I don't really want to fight though. "Yami, do I-" He cut me off. "No, you'd end him." I just nod silently, watching the fight. I knew Asta would win, so it wasn't much of a surprise to me. What did surprise me was Asta reflecting Magna's fireball. He walked out alive, but not unscathed. As if on instinct now, I ran over, touched his forehead and casted my healing spell.
"Asta!" I turned to him, my arms crossed. He practically turned to stone. Never had I raised my voice. Even though it wasn't by much, it was enough to tell that I was upset. "You can't hurt your squadmates, that's bad." I glared at him.
"I'm so sorry!" He dropped to the ground bowing, apologizing profusely. I couldn't help but smile, forgiving him like always.
"It's fine, come on, get up." I pulled him off the ground.
"Now it's your turn, newbie." Magna said to me, a malicious glint in his eye, but Yami stepped between us.
"Nope, not happening." "Wha....Why!?" Magna whined, but I just stared, relieved. "Because he would skewer you like a kabob, now clean this up." After all that there was this over the top ceremony for getting our robes. Vanessa even went and changed Asta's headband. I was planning to make some modifications to mine later.
Once all was said and done, we finally got to go in and see the base for ourselves. It was pretty obvious to me the amount of magic flowing through this place, it was incredible. Magna took me to my room before going to show Asta his. It wasn't anything nice, nor was it spacious like the cave, but I could work with it.

Using some magic I cleaned everything up, making it almost shining, then I started to grow some vines, acting as curtains, a rug, and a light fixture, the flowers illuminating the room. I made my bed frame turn into roots rather than just wood, giving it a more homey, nest vibe. Once I added a photo of me and Yuno, it was all complete, my very own room. I sat down on the circular, soft, vine rug leaning against my nest and looking up at my ceiling, gazing at the flowers that reminded me of the cave.
'Pretty....'

I had probably sat there for hours, just gazing. However, I did wish to venture around the place, there was a lot to learn. So, taking my courage and curiosity, I stepped out of my room, wandering into the unknown.

I had wandered around the grimey halls for awhile, somehow ending up in some sort of dungeon. I wasn;t sure what it was, but there were these really large puppies I think? I'm not sure, but they're very sweet.
"Alright...feeding time.." I heard a low voice approach. "What the!?" It was Yami.

This is the current situation. Yami, my new captain, was standing outside of the bars with a shocked face, his cigar falling out of his mouth, and me, well I was inside the bars, petting the beasts who purred and snuggled against me.
"Oh...uh, hi captain..." Without a second though he reached in and pulled me through. "What on earth were you doing!?" He said, holding me in place by hy arms. "Petting the puppies....?" He blinked then groaned at me, letting go and running a hand through his hair. "Whatever....I need to feed them, so just wait a second."
I wasn't sure what he wanted, but he was my captain so I listened. Once he was done feeding them he walked up to me. "Follow." I did as instructed. It only took us a few minutes to reach what I assumed was his room. He led me in and then laid down on his bed while I just stood awkwardly. "What's your deal, kid?" what? What does he mean?
"Sir, I don't-"

"What are you."