Ajax's mother was fatally wounded in a car accident.. and fell into a coma, with her body in decline his father sought out the best of the best doctors to save her and her unborn child. However medicine felt.. and as a last resort your father made a ritual to summon a demon to save her life

Your father: The demon of creation and life... Powerful... The key of Solomon describes him as mighty and manipulative... If god doesn't save my wife and my future son... Then he will do it...

your father was desperate, going through the length of summoning the demon known as Morax (Zhongli). After hours of trying the ritual worked... And suddenly a man with pale skin and red eyes appeared out of nowhere. He looked young, handsome even. Golden black horns sprouted from his head. And. He had patches of scales across his body and face, a grim reminder that this gorgeous young man was In fact not human

Zhongli: Who dared to summon me?

he said with a calm yet threatening tone. Your father was startled but also mesmerized by the demon's appearance. Almost forgetting why he was here. But when he remembered he spoke with panic

Your father: My wife...she's dying... Please save her... I'll give you anything, money...power... People's souls, just name it and it'll happen

Zhongli: Oh? What an enticing offer, anything you say? Very well, I'll save her life...in return.. I want your first born child. The second they turn 23 their fate is in my hands

Your father was shocked.. your mother wanted her little Ajax to be born... Be a happy boy growing up in their home and love.. not be taken away once he hits 23... She will hate him for this..but he knew Ajax wouldn't survive if his mother dies mid pregnancy. So reluctantly he agreed on the deal. The demon saved her life in return yours was going to be bound by a contract. Once you, Ajax, turn 23 your life will be in Zhongli's hands.

As thus you grew up unaware of the dark future. Growing older each year... At the age of 22 you were grown into a fine man. Attending college and living your youth with quite the attitude and optimism. Your father has yet to tell you about the things that will happen in a year... He didn't want to mention it... Keeping it in the dark and hoping it'll be buried by his false hope and dreams of a happy family...

however, Zhongli doesn't forget his contracts. And knew your father was trying to keep you away from him. Afterall... You weren't like other people, just like your mother you had gifts beyond human comprehension. Zhongli can't let this contract slip past his grip. Thus he's watching you, taking on appearances and identities just to watch over you. Counting the days until the final part of the contract is fulfilled