From CMX:

A modern tale of the supernatural by the author of the Eisner Award-winning Old Boy. ("marginal" is one of several aliases by creator Garon Tsuchiya.)

Masahiko is estranged from his family and lives a dead-end life in Tokyo, working as a chauffeur for high-class call girls. When his sister dies under mysterious circumstances, he inherits an unlabeled CD from her possessions. Listening to the jazz music it contains, he is propelled into an out-of-body experience. As he repeats the experience, he begins to wonder if this was how his sister died. Masahiko is determined to find the cause of her death, and the mystery behind the CD.