Butterfly again

In a world where not everyone has magic, the kingdom is suffering from an infestation known as "Insect Demon". But only those who can use magic can see the Insect Demon... One day, "Butterfly" who works in a hotel meets "Melly" who was sold by her father. In order for Melly to meet her father, the two embark on a journey back home. During the journey, Butterfly seems to gradually remember something...