1 CHAPTER 1

I found myself floating in the dark with only a single source of light gleaming in the distance. In front of me, I think I'm in a dream right now, since the last thing I remember is sleeping in my bed. Yes, I have to be dreaming. Oh, it's a light I mentioned previously. It seems to be getting closer. Uh, hell no, it seems to be exactly like reincarnation or an isekai happening. Why the hell would I be the protagonist? I'm just a normal high school student who didn't even reach 18. I was quite the genius at school. By saying "a high school student," that was only in terms of age because I already finished college. Boom, I was born again.

"Hello there, healthy children. Miss Leywin, congratulations." 

Wait a minute, first of all, Miss Leywin, isn't she Alice from "The Beginning After The End"? 

Could I have been sent here out of every other world?

 Second of all, they say I'm Arthur's twin brother. 

Wait, I'm a boy, right? Right, oh yeah, I'm a boy.

 I can see the family jewels. So, what's the plan here? 

Yeah, a war is coming, so I need to get stronger and form my Mana core. Make sure Elijah dies, Lucand as too. 

Protect Tessia at any cost since she's probably going to get kidnapped. 

Make sure Arthur gets his Aether core and masters fate. 

Get into integration, and have a better position at the war. Well, 

I'll start forming my Mana core today. I wouldn't tell Arthur anything because everything may be worse than the novel. I started meditating to feel the fragments inside my body. It was hard at first since I've never done anything similar in my life. But by following through with what Arthur did in the novel, I was able to gather a few fragments, and that was more than enough for my first day here.

ONE YEAR LATER

One year swiftly passed, and amidst that time, I managed to form a mana core without causing any household explosions. Seizing a moment when everyone was preoccupied, I stealthily sneaked out, avoiding any disturbances. Dad, presuming I was still asleep, was taken aback when the explosion resonated through the house. Upon Mum's return, she scolded him for napping while I awakened as a one-year-old mage. Observing Arthur's parallel journey, I contemplated revealing my reincarnation to him once he awakened. Today marks the commencement of my lessons in Mana rotation, I immersed myself in learning Mana Rotation first, enhancing my ability to manipulate and control mana usage. This served as a crucial step before delving into more advanced techniques.

As a conjurer, my mana absorption proved limited, compelling me to emit more.

Following Arthur's Aether channel formation, despite the pain, I began comprehending why Regis referred to him as a "masochist princess."

AFTER  ANOTHER YEAR

Fast-forwarding another year, Arthur is on the verge of core formation, needing just one more year.

The swifter progress on my end is attributed to my smaller body, shortening the distance for mana particles to traverse.

In the preceding year,  as my journey progressed, I set my sights on the Mirage walk, a skill that conceals my mana signature from others.

This technique follows the foundation laid by Mana Rotation, allowing me to use mana without being detected.

As I hone these abilities, I reflect on Arthur's journey, recalling the techniques he acquired.

Having harnessed all four elemental affinities, along with their advanced forms—Lightning, Ice, Gravity, and Sound—I attribute my early awakening and solid understanding of mana.

My recent year of training focused on refining conjuring techniques, manipulating element percentages in dirt for diverse metal conjurations, and mastering lightning, thunderclap impulse, sound, ice, and gravity magic.

My wind manipulation skills extend to controlling air pressure, creating floating platforms with a blend of wind and gravity, summoning tornadoes, and managing fog density.

I've integrated wind and sound magic into the shadow clone jutsu for creating illusions.

To gather information on betrayers, disrupt Tempus Warps in Beast Glades, and gain insights into Alacryans, I've devised an army of small golems.

These golems, programmed with illusion magic for concealment, store data in a giant crystal beneath our house.

My penchant for programming seamlessly merges with mana manipulation.

For discreet endeavors, I've fashioned an underground playroom and a training facility, ensuring secrecy from my unsuspecting parents.

This synthesis of magical prowess, strategic planning, and technological innovation forms the cornerstone of my mystical journey.

In my training journey, I utilized shadow clones to expedite my progress.

With a hundred shadow clones, I explored techniques like mana rotation, Mirage Walk, thunderclap impulse, and more.

Initiating a conversation with Arthur, I revealed his true identity as King Grey, both of us being reincarnated.

"Arthur, are you awake?" I asked.

"Yes, Tom, what do you need?" Arthur responded.

"Well, I know it might be hard, but I know that you're King Grey."

"What do you mean? Who's Grey?" Arthur questioned.

"I know that you're reincarnated. Just trust me, okay?"

"But how the hell do you know?"

"Because I'm also reincarnated."

"What the heck? You too?"

"Yes, had a life with its ups and downs, though. I was a genius, but loneliness crept in."

"Oh? How do you know my name, then, how do you know about me ?"

"Well, your life was a novel in my world."

"What? But I didn't really... That would be... game-changing stuff, do you think I'll believe in all of this, this easily, Is that even possible? "

"I don't really know what to tell you, but that is from the past now, you have a life to live, a new chance, and I hope you accept me as a brother, and please don't tell our parents," I said.

" No, I'm not going to, and I'm going to consider what you said. " Arthur said.