The backstory and matter of ressurection

Our story begins and we saw a person was fighting with monsters. He was in war with monster. He saw all his comrades are died. He was thinking about his life. He said I am Aiden Decathan. Third son of duke decathan. The member of decathan household. Hearing fancy right. But no, it was not true. Because I was the son of second wife of duke. My mother died when she was giving my birth. This is not sad that too much right. Sad thing is this Decathan household is very famous for many mages and archmages. My father was a 7star mage and my grandfather was 8-star archmage. But the fact was I was not able to cast the mana. For this reason, I became famous as the trash of decathan family. Of course, my father kicked out me from family and I joined mercenary army for living. After 10 years I left. I suddenly hear my father lose a war and enemy killed him brutally and executed my step brothers. Then after 5 years running unstableness in politics royal family falls and other kingdom invade here. After 3 years many dungeons appeared and monsters came out from there. Since then, to today 7 years passes. In that time, I become commanding marshal of mercenary. God didn't do injustice with me I was crippled in magic but a genius swordman. But today is end of me because one side I am alone and other side is infinite monsters. Is here anyone who can help me. Is my death is written like this. If this is my destiny why I born as noble. Then an orc cuts his legs in a sword slash. He said someone please helps. Then a strange grey color eagle appeared with blue eyes like flame. He said young man it feels like your life was a totally disaster. Do you need another chance to live? Aiden replied no I don't that trash life. I will live as poor but I don't want to reincarnate as third young master. Eagle says Hmmmm…... Understand. I am impressed. I'm passing my wheel to you. Aiden says "what are you saying about". I am lord of darkness and I choose you as my incarnation. I hope you enjoy. Then suddenly that eagle transformed into a black aura and get into Aiden. Aiden scream. Then he cools down and notice his hand where an eagle mark appeared. Suddenly a window appeared and said resurrection starting in 5s. resurrection complete 20% then 50% then 70% and last 100%. Aiden felt unconscious.