He will never forget the girl who loudly confessed to him that she would protect him for the rest of his life, outside the city of Demons and on the other side of the River of Forgetfulness.
He will never forget that she used her blood as evil spirit to seal the seven magic swords he sacrificed, and the blood in the sky condensed into many beautiful flowers that colored the clouds.
He will never forget the moment when he unlocked the key to reincarnation. He put down his identity and responsibility as the Supreme Demon Clan and his sworn hatred, just to get her back.
When the duel of fate was played out, he knew that he could not lose, he could only win.