  We present an algorithm to self-consistently generate mock weak gravitational
lensing convergence fields and galaxy distributions in redshift space. We
generate three-dimensional cosmic density fields that follow a log-normal
distribution, and ray-trace them to produce convergence maps. As we generate
the galaxy distribution from the same density fields in a manner consistent
with ray-tracing, the galaxy-convergence cross-power spectrum measured from the
mock agrees with the theoretical expectation with high precision. We use this
simulation to forecast the quality of galaxy-shear cross-correlation
measurements from the Subaru Hyper Suprime-Cam (HSC) and Prime Focus
Spectrograph (PFS) surveys. We find that the nominal HSC and PFS surveys would
detect the cross power spectra with signal-to-noise ratios of 20 and 5 at the
lowest ($z = 0.7$) and highest ($z = 2.2$) redshift bins, respectively.
