/usr/share/chasen/ is in ipadic-common 2.7.0+main-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/chasen/ipadic/
/usr/share/chasen/ipadic.rc
/usr/share/chasen/ipadic/Adj.dic
/usr/share/chasen/ipadic/Adnominal.dic
/usr/share/chasen/ipadic/Adverb.dic
/usr/share/chasen/ipadic/Auxil.dic
/usr/share/chasen/ipadic/Conjunction.dic
/usr/share/chasen/ipadic/Filler.dic
/usr/share/chasen/ipadic/Interjection.dic
/usr/share/chasen/ipadic/Noun.adjv.dic
/usr/share/chasen/ipadic/Noun.adverbal.dic
/usr/share/chasen/ipadic/Noun.demonst.dic
/usr/share/chasen/ipadic/Noun.dic
/usr/share/chasen/ipadic/Noun.nai.dic
/usr/share/chasen/ipadic/Noun.name.dic
/usr/share/chasen/ipadic/Noun.number.dic
/usr/share/chasen/ipadic/Noun.org.dic
/usr/share/chasen/ipadic/Noun.others.dic
/usr/share/chasen/ipadic/Noun.place.dic
/usr/share/chasen/ipadic/Noun.proper.dic
/usr/share/chasen/ipadic/Noun.verbal.dic
/usr/share/chasen/ipadic/Onebyte.dic
/usr/share/chasen/ipadic/Others.dic
/usr/share/chasen/ipadic/Postp-col.dic
/usr/share/chasen/ipadic/Postp.dic
/usr/share/chasen/ipadic/Prefix.dic
/usr/share/chasen/ipadic/Suffix.dic
/usr/share/chasen/ipadic/Symbol.dic
/usr/share/chasen/ipadic/Verb.dic
/usr/share/chasen/ipadic/cforms.cha
/usr/share/chasen/ipadic/connect.cha
/usr/share/chasen/ipadic/ctypes.cha
/usr/share/chasen/ipadic/grammar.cha
/usr/share/chasen/ipadic/matrix.cha
/usr/share/chasen/ipadic/table.cha