/usr/lib/x86_64-linux-gnu/libtokyocabinet.so is in libtokyocabinet-dev 1.4.48-10.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libtokyocabinet.so.9.11.0
/usr/lib/x86_64-linux-gnu/libtokyocabinet.so.9.11.0