The demon king

When the old man Erion was seen he had a smile on his face and said welcome my descendant. . .

As Erion heard this he thought "D. . .Descendant?!", he asked the old man "Sir who are you?", the old man said "I'm the first demon king Aclevia Exitum", Erion was shocked as he heard this.

"Sir you do you want to say that I'm a demon?", the old men replied "Yes not just a demon, a demon king", Erion was stunned and said "Sir I'm a human".

The old man was shocked and asked "Y. . You're what?! A human ?!", Erion said "Yes sir I'm a human boy", the old men asked "How did you got my sword then?", Erion smiled and said "My Master Gladio Novix gave it to me before he died".

The old men started to laugh and said "Well well well who would thought that my descendant would be an human, that's hilarious!". "Is this old man joking ?" Erion thought while he had a fake smile on his face.

"I'm not joking" the old man said, Erion thought "Can he read my mind ?", the old man said "Yes I can".

Erion asked "H. . How can I become a demon lord without being a demon?", the old man replied "Well you are and you're not just a normal demon your bloodline is not a normal bloodline you got mine and a other one that means your mothers bloodline has to be worthy to coexist with mine that means your mother is either a goddess or anything else on the same level as a demon king".

Erion was shocked and confused. . . He couldn't believe it but he knew that this old man said the truth, the aura of this old man was stronger than his old brother when he was angry.

The old man said "Boy, what is your name ?", Erion answered "My name is Erion Vivuell, sir", the old man had wide-open eyes and thought "E. . Erion I see", the old man put a innocent smile on and said "As my descent and the next demon lord you're allowed to study in this library".

Erion was surprised and said „Sir, I am a human I can't read these books, and I'm just a human boy I bet these books are written with the demonic script", The old man took a book out of nowhere and gave it to Erion and says "Look at it what you see ?", when Erion try to read the book he said "The magic of purgatory", the old man smiled and said "This book was not a normal demon book it was one of the 100 secrets of our race that only the demon king could read, get more confidence, you have always been a demon king, it is predetermined for you always had the talent to be a demon king".

The old man held out his hand, opened his fist and said "Do you want to accept your inheritance?". . .

. . .