Examples of quasar-host decomposition based on the HSC i-band image. From left to right: (i) the observed HSC i-band image, (ii) the best-fit point source + host galaxy model, (iii) the data minus the point source model (the pure-galaxy image), (iv) fitting residuals divided by the variance map, and (v) one-dimensional surface brightness profiles (top) and the corresponding residuals (bottom).