/usr/include/ is in libkiten-dev 4:15.12.3-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/libkiten/
/usr/include/libkiten/kromajiedit.h
/usr/include/libkiten/dictionarymanager.h
/usr/include/libkiten/historyptrlist.h
/usr/include/libkiten/DictEdict/
/usr/include/libkiten/DictEdict/dictfileedict.h
/usr/include/libkiten/DictEdict/entryedict.h
/usr/include/libkiten/entry.h
/usr/include/libkiten/entrylist.h
/usr/include/libkiten/dictquery.h
/usr/include/libkiten/DictKanjidic/
/usr/include/libkiten/DictKanjidic/entrykanjidic.h
/usr/include/libkiten/DictKanjidic/dictfilekanjidic.h
/usr/include/libkiten/dictionarypreferencedialog.h
/usr/include/libkiten/libkitenexport.h