That day, in a corner of the house...



Are you still concerned about Yuki-dono?
...Yes. Teacher.
Again, it's impossible for Yukidon to use 'ancient magic'. That's because it's a magic that can only be used by the chosen ones.
'Yes, sir. I know that, sir.
"I can understand why Lord Xellos is so wary of you, Yukidon. You saw the Baron's attitude just now.　She was so concerned about Yuki-sama. It seems that she is being cajoled. I thought it was the proof that Yuki was trying to overthrow you and make you a legitimate son.
Doctor, I'm...
Be on your guard. Mr. Xelloss.

　Teacher Kachel grabbed Xellos-Grossaria's shoulder.

''Yukidono is steadily implementing a plan to get the servants on our side. The last time I saw her, she was trying to treat her servants to the prey of the hunt. This is an obvious attempt to curry favor with the servants. I don't know what would have happened if I hadn't stopped him.
Did Yuki really... try to get rid of me?
It's a common occurrence in noble families.

　Kachel murmured as he spat out blood.

''A bastard takes over a nobleman and eventually takes over his house. To neglect a man who is a legitimate son just because he is a little better is unacceptable. I must show him. You must show them that your true power is not like this. And.
...doctor?
'Listen, Master Xellos. You have only this Kachel-Migen on your side. You see, I am the only one on your side.

　Kachel repeats the same words.
　The bastard invades the Baron's house.
　The baron recognizes Yuki, and that it's all just a ruse.

'I trust you. Xellos-sama.
Sir.
"You are the one I'm supposed to be serving, Zeroth. If I didn't have much magic, I might not be able to gain Lord Xellos' trust...
No, no. I have faith in Dr. Kachel.
'Then repeat the same words. Clutching this amulet - Yuki-Grossaria is an enemy - and we have a common enemy. We must confront it, and we must confront it.
W... we have a common enemy in common.
"No matter what Yukidon does, you can't defeat Xellos-sama and I. We've already taken steps to unite our magic power. I've already taken steps to make sure that Xellos-sama and I's magic power becomes one. Please don't worry about taking the test that day. Xelloss-sama.




　At the same time, in Yuki's room.



　After returning to my room away from the house.
　I decided to investigate the phenomenon I just saw.

　Brother Xellos' 'Ancient Magic' was activated by drawing a crest in the air and casting a spell.

　The crest could be read from the movement of my finger.
　I didn't understand the spell. That wasn't the language of any country, as far as I knew.
　It's probably a language exclusive to 'Ancient Magic'.
　The only way to know is to learn it from Teacher Kachel or the 'Magic Guild'.

　I only drew the crest and did not chant the spell.
　But 'body strengthening' has been activated.

　Let's think about it from the beginning.

　There are two types of magic in this world: the magic commonly used and the 'ancient magic' discovered by the 'Sanctuary Church'.
　The difference between them is their power, staying power and the amount of magic power consumed.
　Compared to the general magic, the three items of the 'ancient magic' are incomparably stronger.

　My brother drew with my father, who was a veteran warrior, using 'Body Strengthening (Boosted)'.
　After that, I drew the same emblem that my brother showed me, and my body became strong as well.
　The question is, how did my technique work?

"Let's find out.

　I took out a piece of parchment.
　With pen and ink, I try to draw the crest from that time.

"Well nothing happens.

　Next, I'll use my Myster Blood.
　Earlier, I dipped my fingers in blood and drew a crest on my palm. Then there was a change.
　Let's do the same thing.
　Cut my fingertip with a knife, dip it in blood on the pen and draw on the palm of my hand.


　It's triggered.


　I feel light.
　Let's not jump let's not do it. I crash into the ceiling.
　The rest of the time, I count the seconds in silence: one hundred two hundred roughly six hundred and ten minutes.

　Next, I'm going to put my blood on the pen and draw a crest on the parchment.
　When I threw the parchment with a "tsk tsk" - it fell down normally.
　There is no way that parchment can 'strengthen your body'.

".........So the cause is my 'magic blood'?

　I displayed the status again.


"Yuki-Nosferatu.

　Age: 13 years old
　Ethnicity: Unknown
　Strength: B
　Arm strength: B
　Agility: A
　Magic Power: S
　Dexterity: B

　Skill: Flying. Magic Blood. Awareness Blocking. Ice Magic. Squire Creation. Erosion. Purification. Ancient Magical Aptitude.


　More skills.
　What do you mean?　Until now, there was no such skill as 'Ancient Magic Aptitude'.
　In the first place, he must have never used 'Ancient Magic' in his previous life.
　He was even stabbed by an 'Ancient Instrument' holy sword in the last time........

''That time?!''

　When I died in my previous life, the holy sword was stained red with my blood.
　And my blood is part of my limbs.

　When I died, I was connected to the Sacred Sword, the ancient artifact.
　It means that I was connected to the Ancient Artifact when I was reincarnated.
　That affected my soul in some way, and as a result, it seems that I was able to acquire an aptitude for ancient magic.
　Therefore, just by drawing a sigil with 'Myster Blood', you can activate 'Ancient Magic'.

''........Interesting.''

　When I reincarnated, I thought that the humans of this era might have analyzed the 'ancient artifacts' and developed their culture.
　But it was not to be.
　Because of the war, the Ancient Artifacts disappeared and the Ancient Magic became the property of the Lindbergh Magic Guild.
　But what if I was to become a master of the 'Ancient Magic'....

''I might be able to develop the culture and make this world a more comfortable place.''

　Yes. End of fantasy.
　It's not going to happen. It's impossible.
　In my former life, I was the local demon king, and now I'm the bastard child of a baronial family. I don't have high hopes.

　All I want is to know people and to be able to pretend to be human. That's all.
　Let's leave the affairs of the human world to the humans.

"Let's hope Brother Xellos joins the 'Magic Guild' and becomes a great one.

　I lay down on the bed.
　From outside, I could hear my sister Lumia and Martha's voices.

'Brother Yuki caught the rabbit!　The lunch menu is your brother's meat!
That's great, Yuki-sama. It must be delicious.

　Lumia, that makes it sound like you're eating my flesh.
　Martha had better keep her voice down a bit, too.
　Everyone in the mansion knows they're childhood friends, but if Kachel hears about it, it's going to be a problem.

''Well that's fine by me.

　I will be reincarnated as a human and have a normal family.
　I'm going to be able to attend the academy and gain knowledge of this era.
　As the bastard child of a nobleman, I'm treated well enough.

　I'm no longer the 'Local Demon King' and I'm not the 'Vampire Lord' or the 'Vampire King'.
　What happened in my previous life is already over.
　The 'Sanctuary Church' that hunted me down is no more.

O Immortal Sorcerer!　You, as the Demon King, are planning to conquer the human race, aren't you!''

　As the Demon King, you shouldn't have to be reckoned with like this anymore.
　I mean, no one has ever planned to conquer the human race.
　I just wanted to practice magic to make the watering of the people in the village easier and reduce the diseases of the livestock so that they could eat meat every week.

".........it's annoying. Past life.

　I decided to sleep until lunch and closed my eyes.

　That night, the butler, Nail, told me the date of the Princess's arrival.
　He also told me that starting tomorrow afternoon, the mountains behind the house would be off-limits as one of the potential exam sites.

　I decided to get out of the mansion again.