Demonic Dark Dragon God: Soul Land Fanfic

Demonic Dark Dragon God: Soul Land Fanfic,

10 milion years after reborn in body of spirit beast dragon, finally he become human to feel the plot in adventure of mc and his friend.
but in this life he is the MC

Author's note:
this the first fanfic that i write and there something i forgot in the soul land novel and manhwa so i welcome the suggestion other in comment

if there error is normal because my native language is not english and i in 16