Yojeongnim, Gyeyakae Juseyo

When life gives you fairies, make a deal with them! When a young boy living locked up in a prison cell meets a newborn fairy, he begins to experience new emotions and, for the first time, dreams of freedom. His new fairy friend can help him attain just that, but nothing comes for free. First, he'll have to enter into a fairy pact! (Source: Manta)