Medicine

This story follows a young human girl called Astelle who made the mistake of falling in love with the wrong person. He wasn't a human - he was far from it.
Their friendship bloomed once they began to exchange a few sweet words through letters.
He lived far away from her and she had never seen anything like him.
But can they get past their differences and end up together? What does the society say? And what about the ongoing war between the good and the bad?