The betrayed heroes Also part of the Wolf Saga

40 billion years ago in the Mythical era the planet was ravaged by war the Gods and their followers the Angels and the Devil's and their followers Demons. Humanity was caught in the middle of the war between God's and Devil's It was believed that the human race would be wiped out however two brothers were born among the humans they were swordsmen and each were unparalleled among all of humanities warriors the first brother was a kind hearted man who believed in the good in everyone he was named Alexander his brother was a cruel man who believed that peace could only happen when one side was wiped out he was evil and his name was John. Alexander became known as a Devil slayer a man who slaughtered countless Demonic entities with his swordsmanship and was believed to be a hero. Meanwhile John was known as a God killer a man who slaughtered countless Divine and Holy entities with his sportsmanship and was believed to be a grim reaper for the Devil clan. As they grew older they became more powerful to the point where they could rival even the strongest among Devil's and God's posing a threat to the two clans at war. One year when each brother was at the age of twenty John was selected and brought into the ranks of the Demon clan where he was taught how to use demonic energy and trained to become a demonic swordsman. While at the same time Alexander was selected and brought into the ranks of the God clan where he was taught how to use Holy and Divine energy and trained to become a Holy and Divine swordsman.