  We study generation of baryon number asymmetry and both abundance of dark
matter and dark energy on the basis of global symmetry and its associating flat
directions in a supersymmetric model. We assume the existence of a model
independent axion which is generally expected in the effective theory of
superstring. If we consider a combined field of the model independent axion and
a pseudo Nambu-Goldstone boson coming from spontaneous breaking of the global
symmetry, its potential can be sufficiently flat and then it may present a
candidate of the dark energy as a quintessential axion. Both the baryon
asymmetry and the dark matter are supposed to be produced nonthermally as the
asymmetry of another global charge through the Affleck-Dine mechanism along the
relevant flat direction. Its decay to the observable and hidden sectors
explains the baryon number asymmetry and the dark matter abundance,
respectively.
