\clist_new:N \g__ltj_fontspec_kanji_default_fontopts_clist
\clist_new:N \g__ltj_fontspec_orig_default_fontopts_clist
\cs_new:Nn \__ltj_set_global_variable_for_kanji: {
\tl_gset_eq:NN \g__ltj_fontspec_orig_nfss_family_tl \g__fontspec_nfss_family_tl
\tl_gset_eq:NN \g__fontspec_nfss_family_tl \g__ltj_fontspec_kanji_nfss_family_tl
\clist_new:N \g__ltj_fontspec_kanji_default_fontopts_clist
\clist_new:N \g__ltj_fontspec_orig_default_fontopts_clist
\cs_new:Nn \__ltj_set_global_variable_for_kanji: {
\tl_gset_eq:NN \g__ltj_fontspec_orig_nfss_family_tl \g__fontspec_nfss_family_tl
\tl_gset_eq:NN \g__fontspec_nfss_family_tl \g__ltj_fontspec_kanji_nfss_family_tl