Argh, this is annoying...
I've become the strongest, yet I got betrayed.
Shichido — that demon — didn't obey my orders and kill the heroes.
And this useless ring...
Now I'm stuck in this human's body.
Two weeks have passed since my so-called reincarnation,
But it wasn't true reincarnation — it was more like my memories were transferred into this human shell.
I took over someone's body. His name was Kagen — or well, it's my name now.
My demonic powers came along with me... but not fully.
I've only regained around 4%.
I didn't get them back completely because of this weak body.
If I unleashed my full 100%, this fragile vessel would explode.
So, for now, I need to strengthen this body.
At least I wasn't too unlucky — I reincarnated into a royal family.
My father is the third son of King Aldric, the ruler of this country.
So technically, I'm a prince.
Not a bad start.
---
H-hey, Kagen, can you help me?
Leave me alone, Seraphina.
Hey! You can't talk like that to your older sister, Kagen!
Bla, bla, bla... can you shush, kid?
Kid? I'm older than you! You're making me angry already. Forget it — I don't want your help.
She turned around to leave.
Argh, I forgot — I need to be kind...
Wait, Seraphina.
She turned back to me.
Y-yes? she said, her voice full of frustration.
What do you need help with?
Finally, this is the little brother I know.
She said it with a bright smile.
What do you mean? I asked.
Well, you see, Kagen... lately you've been acting strange.
You always have this bad attitude... and the look on your face...
She paused.
It's like... you're not my younger brother.
Wait — is this girl about to find out I'm not really her brother?
Argh, I need to be careful.
No, Seraphina, I'm just tired lately, that's all.
Hmm... okay, I guess. Well, I wanted your help making a present for Mom and Dad — they're coming back today.
I see...
So I'll finally meet the mother and father of this body.
This isn't great.
I might have tricked this dumb human sister, but the parents might be harder.
And being human...
It's terrible.
I'm drowning in emotions I don't even understand.
Hello? Kagen? What are you thinking about?
She stared at me, concerned.
She took a deep breath, then sighed.
Never mind, Kagen. You're tired. Go get some sleep — you can't meet Mom and Dad like this.
She said it in a disappointed voice and left.
---
Even after two weeks, I still can't fully get used to these emotions.
As I walked through the halls back to my room, my mind spiraled deeper.
What if this...
Is a second chance?
I'm in a young body again — only 16 years old.
I could use this...
Use this new life...
To take my revenge.
I still can't believe Shichido betrayed me.
I gave him everything he ever wanted.
Why?
Just why?
Lost in my thoughts, I noticed someone standing in front of me — only half a meter away.
Hello, Kagen — my dumb, weak, and useless younger brother.
Still wasting your time, like always?
He said it with a mocking smile and a sarcastic tone.
Argh... yes.
This is Kagen's older brother — Cassian, if I remember right.
He's 21 years old.
I can tell the original Kagen didn't have a good relationship with him.
For now, I need to avoid trouble.
I don't even have all of Kagen's memories yet.
I stared him in the eyes for a second, then looked down and walked past him.
Hey! Wait there, you useless shit.
He grabbed my shoulder.
I turned around, staring deep into his eyes.
His face twitched. Sweat dripped from his forehead.
Fear.
I could feel it pouring off him.
Just... who are you?!
He asked, trembling, before quickly letting go and turning away.
I guess I scared him off.
Well, I'm not truly his brother anyway — he must have sensed that.
Doesn't matter.
I need to focus.
I headed back to my room.
---
I woke up inside this oversized bedroom.
It's massive for a 16-year-old... but still tiny compared to my real room in the demon castle.
My castle was beyond grand — guarded day and night by my demons.
I can't lie...
I kinda miss them.
They were like my children.
But three of them were killed...
And one betrayed me.
Wait...
What am I thinking?
The human emotions...
They're messing with me.
I need to focus.
Alright.
I've gathered enough information about this Kagen.
He owns lots of training equipment.
He's got a decent build for his age...
But no real talent.
No true ambition.
I can tell just by looking at his room and the diary he kept.
He was the loser of the family.
But even if he was hated or ignored...
I can't believe what I found.
When I first woke up in this body, I searched the room...
And discovered a paper — an ancient spell from five thousand years ago.
Forbidden magic.
Why would a human boy like him have something like that?
There's probably only one answer —
He wanted to become stronger.
He wanted to be accepted by his family.
Argh...
This is kinda sad.
This poor kid...
He just wanted to prove himself.
I felt something wet fall onto my face.
Tears.
I'm crying...?
This...
This is the first time I've ever felt sadness.
Argh.
I need to find a way to get rid of these feelings.
---
I took my shirt off and laid down to stretch.
Afterward, I trained this weak body for two hours straight.
I can't believe it —
I'm already exhausted after just two hours.
Why are humans so fragile?
Then I remembered the two heroes.
Well, not all humans are weak, I guess.
Alright.
It's time.
I stood up and closed my eyes.
Let's see how much I can use now.
I slowly drew out my power...
Arghhh!
Yes — this feeling.
Finally, some more of my strength.
I'm now at around 7% —
But that's as far as I can push for now.
I need to find a way to make this body even stronger.
Simple workouts won't be enough anymore.
I need to start learning human magic.
Of course, it's not even close to demon magic —
But it'll have to do.
Therefore, I need to meet the parents of this body.
I'll ask them for a magic teacher.
Because right now, these magic books are useless —
I can't even fully read the human language yet.
For now...
I wait.
____