Time skip 2 years

In a boisterous city you could see in the back of a clinic a dark blue haired tanned young man curing a dragon.

Dragon: "thanks doctor for the help"

Doctor: "no problem but what happened out there in the wilderness?"

Dragon: "we encountered a demon! He killed hundreds of our kind i arrived to escape after by brother sacrificed himself *dragon crying*"

Doctor: "a demon? They should have been killed!"

Dragon: "he was more than a demon he was exterminating us while laughing and saying strange things like" i still need 2 dragons to upgrade my core to rank 7 so who's next? " he didn't even spare the old ones!"

Doctor: "and he just appeared out of thin air?"

Dragon: "it all started 2 years ago, before we heard that a human could kill 2 of us on his own which we didn't believe but after we heard that more dragons kept be killed so we put a bounty on his head!"

Doctor: "and what happened after?"

Dragon: " he came to our den and you know the rest we called him the white or black slayer"

Doctor: "the white or black slayer?"

Dragon: "yes because the last thing that you see his black and silver swords"

*loud crowd noise *

Doctor: "stay here i will go see what is happening outside"

Dragon: "no problem and thanks doctor!"

Doctor: " no problem*thumbsup*"

There was a huge crowd before the gate of the city.

Doctor: "sir what's happening?"

Person A: " ooh doctor a young man showed up with the corpse of a dragon!"

Doctor: "what! Doesn't he knows that we are in peace with them?"

As he said this the doctor made space between the people and came in front of the crowd. What he saw was a white haired youth with clothes in tatters and with blood all over his body sitting on the head of a sky dragon. He had 2 swords one on the left and the other on the right of his hips.

Young man: "yaaa finally a city! I couldn't continue to sleep in the wilderness! Even more those muscle heads of dragons kept appearing! I'm fed up to eat their damn meat!!"

City guard A: "halt! Identify yourself!"

"me? I'm Luxa D. Arcadia pleasure to meet ya~" said the young man looking smugly at the crowd stopping when he encountered something interesting.

"isn't that Acnologia you still aren't a dragon?"