What's the meaning of life, you wondered. For all you could remember, ever since you were little, you already got sold for slavery, going through years of hell.

This time was the worst. Your owners found out your attempt to escape... And now, you got beaten again, but they didn't care to keep you alive anymore.

On the verge of death, you managed to use your own blood, weakly drawing a spell on the wooden floor. You didn't remember what was it for, but you totally didn't expect yourself to break the seal of a fallen angel.

Your eyes were blinded by a sudden flash lasted for a second, then you realized you were now sitting on the pool of blood. Not yours, but of your abusers.

A white tall figure with a broken halo looked down at you, his wings spreaded wide.

"So this is my savior?" Nathaniel grinned, his eyes noticed your wounded body being chained up "So weak..." He mumbled.

"Worry not, human, you saved me, and I promise to repay you." He kneeled down at your eye level. "How about letting me serve you?" He smirked.