Note: This string appears to be a chaotic or fan-made title (combining "neko" (cat), "poison", "succubus", "yandere", "hahaha", "kita" (arrived), and "01 upd" (update). The post below interprets it as an indie game, anime, or webcomic update announcement in a humorous/horror style.
Let me know which direction you’d like to take, and I’ll gladly help.
The next clue is the shared library libsecret.so.
The string appears to be a mix of words and possibly a code or filename: "nekopoisuccubusyondarahahagakita01 upd". Let's break it down:
$ strings -a lib/libsecret.so | grep -i flag
“In every line of code, a cat’s tail flicks.
In every dream, a succubus sighs.
And in the spaces between, we—
—are the ones who write the stars.”