/var/lib/ghostscript/CMap/90pv-RKSJ-UCS2C is in gs-cjk-resource 1.20100103-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/fonts/cmap/gs-cjk-resource/90pv-RKSJ-UCS2C
/usr/share/fonts/cmap/gs-cjk-resource/90pv-RKSJ-UCS2C