I guess you all can predict this is my very favorite fairy tale among all.

Taeyong isn't a witch. He just carry the sins people confess to him at the church.  He carried the sin every where he go. That's made he thought he was a beast.

Taeil think Taeyong is the beauty. Everywhere he go people look up to his beauty. Some will fall in love and some grew jealous. 

The truth is Taeil already in love with Taeyong. But he cant confess as long as Taeyong think he's the sinner. He need the latter to clean up his mind- to think that he's still pure.

So he capture the beauty and exorcise him from being the beast.The sins have left the beauty so Taeil made him his beauty. 

THE END.