  We investigate a gravity solution containing the gravitational backreaction
of the massive scalar field dual to the chiral condensate, which corresponds to
$1/N_c$ correction. In general, condensation changes the vacuum structure, so
the present dual geometry is appropriate to describe the chiral condensate
vacuum in the gauge theory side. After constructing the dual geometry
numerically and applying the hard wall model we study the effect of the $1/N_c$
correction on the lightest meson spectra, which improves the values for
lightest meson masses into the observations. In addition, we investigate the
chiral condensate dependence the binding energy of heavy quarkonium.
