/usr/lib/x86_64-linux-gnu/libchasen.so is in libchasen-dev 2.4.5-12.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libchasen.so.2.0.4
/usr/lib/x86_64-linux-gnu/libchasen.so.2.0.4