After fifteen years of imprisonment and loneliness, a stubborn girl with fiery hair rudely arrives to Soran Silvery. He can't deny her asylum, but he can resist her requests to teach her magic. If his suspicions about her turn out to be true, the magic that she might possess would lead to disaster. Nilla survived the first part of the mission on Roseward Island: she convinced the disgraced magician to leave her. Now, if she finds his hidden spell book, she can go home and save Dad. Everything should be simple. But as the danger on Roseward Island gets closer, the situation that once seemed simple becomes more complicated every day. Will Soran be able to drive away the woman who gave his life a new meaning? Will Nilla be able to betray the one who opened her eyes to opportunities that she did not know about?