http://vignette3.wikia.nocookie.net/darkair/images/0/02/Dark_air.png/revision/latest/thumbnail-down/width/340/height/340?cb=2012 [Manga]

The world used to be filled with magic. One day, though, it disappears because of a thing called “Dark Air”, and suddenly, only 2 people remain who can perform magic. One of these people, Melrose Silvringtinker, decides to solve the mystery of Dark Air along with a swordswoman and musician, and so, the adventure begins! ~