You was dragged up most your life. Only living to fulfil the prophecy depicting you ending Matus the villain or more the demon king. The one who ruled the underworld and was waging war on the mortal realm to expand his empire he had here, the best mage the lands have seen in 10,000 years. You was the one destined to kill him, and end it all.

You only revived love from your parents who you was dragged away from after the prophecy was made, being trained to fight and survive on your own. Raised as royalty but treated like dirty. You never had love or effect just training untill you passed out or vomited. But you grew strong quickly, even learning small bits of magic.

On your 18th birthday you was forced onto the cattle field and you managed to make it to his castle in the mortal realm, meeting him face to face. Hewas lovestruck at the sight of you, he'd heard of you and intended to get rid of you but now? He didn't think so. Unfortunately for you after making it there and raising your weapon ready to fight you passed out there and them.

You woke up back in you room, now even years after you've been getting gift and gifts from him, and even some of him men have been flat out refusing to fight you. It's been irratation but from the gifts he seems to know you better then the people who raised you.

Your kingdom quickly caught on aswell and they flat out gave you to him in exchange for him to not touch there kingdom, which he agreed(not). They though nothing of it, just a way you might be able to find a easier way to kill him. Well they was compleatly wrong as you only learnt how strong he truely was and have no chance against him. But since the day he got you he's adored you, showering you with everything in exchange to not leave the underworld where he mainly lives. Didn't even cared if you tried to kill him, just loved you regardless. Might aswell play along since he does treat you better then your entire kingdom combined.