What if you are reborn as a demon after a funeral?

"You must be Celie, the mage on this continent who is closest to the goddess."

"You're quite amusing. This is the first time I've ever seen a demon like this, even..." Celia grinned, a playful smile on her face as she sized him up. "You know perfectly well who I am, yet you still dare to appear before me? Are you here to challenge me?"

"No, I've come to become your apprentice."

"Ridiculous! A demon wants to become my disciple? Although I am an elf, I am also human in a broader sense, and we are irreconcilable enemies of the demons. You actually want to become my disciple? Are you out of your mind? No, wait, you don't even have horns. There must be something wrong with you. We are completely hostile races!"

"...What you said makes a lot of sense, but I think I'm perfectly normal. Besides—at least I know very well that you don't want world peace, do you?"

"Oh?" His confident statement made Celia unconsciously narrow her eyes.

"If you wanted it, you could have achieved it long ago."

"You talk as if you know me very well."

"Some research."

"It's obvious you've killed a lot of people, so why should I teach you magic?"

"Actually, I'm troubled by this problem."

"Aren't you afraid that I'll kill you?"

"We have to try it first."

“…Very good, I like it very much.” At the end of the long silence, Celia slapped her thigh and laughed heartily.

"—Let's wait and see what kind of demons I've trained will become."

"Uh... It's a bit strange for me to ask, but isn't this a bit odd?" Even though he had some expectations after conducting prior investigations, this reason still left him somewhat dumbfounded.

"That's interesting, isn't that enough? Just tell me what kind of magic you want, anything is fine!"

"Anything is okay?"

"That immortal magic."

"—How could such magic possibly exist?" He had barely uttered the question when Celia rolled her eyes and retorted, "If it were possible, would humans still be dying?"

"...Oh, right." He closed his eyes and thought for a moment, then remembered the biggest problem he had encountered on the battlefield—his body was too weak as a mage!

So he asked, "Is there any magic that can make my body as strong as a warrior's?"

"The magic you desire truly existed in the mythological era."

"really?"

"It really is. It allows magicians to freely convert magical power, unleashing the combat power of warriors of the same level. It's quite a useful spell, and its surprise attack effect is excellent in crucial moments, but..."

"only?"

"I can't." After a long pause, she finally spread her hands out in a very nonchalant manner, almost making Ash want to hit her: "Wait a minute? Aren't you supposed to be able to do everything?"

“I have mastered almost all human magic, but that’s almost all. Moreover, this magic itself wasn’t invented by humans; it was invented by a great demon. I’ve been researching it for thousands of years but still haven’t succeeded. But I can give you all my achievements through ‘transfer magic’.”

Transferring magic means giving away a spell entirely to someone else... even if the spell is incomplete, Celia can still transfer it.

Although Ash initially wanted to complain again, since it was magic from the Great Demon Clan, he couldn't say anything more.

After all, the unique magic possessed by any great demon race is fundamentally something that humans cannot learn, because—the magic of other races and demons is actually not the same thing at all.

Humans, including elves, are merely trying to simulate the spellcasting effects of the demons, but the spellcasting process is completely different for both sides, and many aspects have been altered and cannot be reproduced.

In layman's terms, even if the principles of spellcasting could be studied, there are no magical organs like those of the demon race, let alone those of the great demon race. Their uniqueness makes it completely impossible for humans to reproduce them.

(PS: This point is specifically mentioned in the original work, which also emphasizes that murder magic is an exception. Murder magic is too efficient and too simple, which is why it is excellent, but it also makes it extremely easy to use, even humans can use it.)

The Burial of Frilian: A Thousand Years Later: Chapter Fourteen - A Master and Disciple Sharing Hardships

At first, Ash thought that becoming an apprentice might involve some strange tests, but the result was... surprisingly simple.

He unexpectedly and easily became an apprentice, unexpectedly and easily obtained the magic of the great demon race from the mythical era, and even stayed here, browsing through Celie's other books.

The reason for this... isn't anything particularly special.

Celia has the ability to end the war, but she is unwilling to do so, and she will generally not take action against the demons unless absolutely necessary.

According to Ash's research before his arrival, the elven race's consciousness is actually quite weak. They prefer maintaining a state of war rather than world peace, and they will only choose to stop a major disaster if it occurs, depending on the situation... or they may not stop it at all.

Ash only dared to come to this place because he was quite confident. She simply found Ash interesting and took him on as a disciple, and...

"Ash, now that you've become my apprentice and I've taken on a new disciple, hurry up and prepare a big meal to celebrate!" Celia, who had actually been longing to be freed from the kitchen, waved her hand and unhesitatingly ordered her new apprentice around. However...

Ash, who was still looking at her treasured collection of books, looked up and stared at her blankly, showing no sign of taking any action.

This immediately annoyed her, and she said, "Didn't you hear what I said?"

"No, I was just wondering, are you serious, Celia?"

"What do you mean? I teach you magic, but you won't even cook for me?"

"It's not that I'm unwilling, it's that I don't know how. Of course, if you want to try the specialties of the demon race, I wouldn't mind showing off my skills."

"Special characteristics of the Demon race?"

“We actually eat raw food, but can your stomachs really handle it? If you can, I don’t mind giving you some.”

Ash spoke in a serious tone, even though he himself didn't know the truth. He then silently stood up and prepared to prepare some pork sashimi for her.

This made Celia only think about it; the taste of raw meat made her face scrunch up: "Never mind... I'll just handle it myself!"

"By the way, I'm actually a little different; I like to eat cooked meat."

"Who asked you? Get lost! Go eat your demon specialties outside!"

"No, I can also eat barbecue."

"...You're not just too lazy to do it, are you? You're just lying to me on purpose!"

"Believe me, I'm doing this for your health."

............

Celia really wanted to get Ash to do chores, but unfortunately... even when she tried to get him to cook, his cooking was absolutely terrible.

I tried to teach, but three years passed in the blink of an eye...

"...Seria, add some spice! Trust me, this meat tastes better with chili!"

"No, I don't eat spicy food." Celia snapped without turning around as she tossed the food in the wok. "And what's wrong with you?! I'm the one teaching you, so why are you the one giving me instructions?"

"Don't say that. Why should we care so much about things between master and disciple?" He readily ignored Celie's dissatisfaction and said to himself, "Put less salt in. Your taste is too strong."

"...A mere demon is quite picky."

"I'm worried that you're getting older and eating too much strong flavor can easily lead to high blood pressure."

"...I've lived like this for thousands of years and I'm fine! On the contrary, you've only been here for three years, and my blood pressure has already risen quite a bit!"

Why did teaching become my own culinary skills, improving through teaching, and then... I ended up taking charge of the catering business?

Although she was usually quite bored, and Ash had a lot of good ideas, a strange sense of emptiness still made her quite unhappy, and she turned her head to glare at Ash fiercely.

Having become quite familiar with the habits of this loli elf teacher, Ash naturally raised his hands, smiled, and silently retreated away from the spot, trying his best not to let the teacher, who was in a fit of rage, knock him away.

.........................

There's always a limit to how easy it is to live off others. Although elves are generally very patient and their time dimension is different from humans, in this third year, Celia finally couldn't take it anymore and decided to force him to cook.

And she changed her approach, taking the initiative to guide him from the sidelines, even secretly vowing to teach him to become an excellent cook so that she would no longer have to cook.

"...Yes! Flip it like that, and add plenty of seasoning! Hey! Don't think I didn't see you! No chili peppers allowed! If you dare to put chili peppers in when I'm not looking, I'll shove them all into your mouth!"

"You're really rude! But do you think it's acceptable to roast a whole lamb without adding any spice?"

"I am the master, and if I say no, then no! No talking back is allowed."

Seeing her disciple squatting in front of her turning the grill, Celia lifted her leg and lightly kicked his butt, and also slapped away the chili powder he had just picked up.

"Tsk, these old folks these days really don't understand anything..." Ash muttered under his breath, then casually broke off a leg of lamb, wanting to taste it without chili first.

But as soon as she managed to pull it off, her hands were burned and she couldn't stand it. While constantly switching between her hands to avoid getting burned, she instinctively turned around and threw it over: "—Quick! Quick! Celie!! It's hot!! Take it!"

"Huh? Uh—it's so hot!! So hot!!"

Cerriel, caught off guard, instinctively took it, only to be immediately burned and her face changed color. She quickly switched hands between them and reflexively pushed it back.

Based on the principle of not wasting anything, he subconsciously took it again, but quickly stuffed it back into his hands:

"No! Don't give it to me! It's too hot!"

"—It's hot!! Hot?! You little brat...you think I'm not afraid of getting burned?!"

After another cycle, Celia finally realized what was happening and, while switching between her left and right hands, quickly threw the frozen lamb leg onto the ground.

After successfully handling the scalding hot lamb leg, Ash couldn't help but wipe the cold sweat from his forehead: "Phew...that was close, my hand almost got blisters."