-\DeclareSymbolFont{mincho}{JY3}{mc}{m}{n}
-\jfam\symmincho
-\SetSymbolFont{mincho}{bold}{JY3}{gt}{m}{n}
-\DeclareSymbolFontAlphabet{\mathmc}{mincho}
-\DeclareMathAlphabet{\mathgt}{JY3}{gt}{m}{n}
+\unless\ifltj@disablejfam
+ \DeclareSymbolFont{mincho}{JY3}{mc}{m}{n}
+ \jfam\symmincho
+ \SetSymbolFont{mincho}{bold}{JY3}{gt}{m}{n}
+ \DeclareSymbolFontAlphabet{\mathmc}{mincho}
+ \DeclareMathAlphabet{\mathgt}{JY3}{gt}{m}{n}
+\fi
+
+\newif\if@ltj@match@family
+\@ltj@match@familyfalse
+\def\verbatim@font{\normalfont\ttfamily\kanjifamily\jttdefault\selectfont}
+\DeclareRobustCommand\rmfamily
+ {\not@math@alphabet\rmfamily\mathrm
+ \romanfamily\rmdefault
+ \if@ltj@match@family\kanjifamily\mcdefault\fi\selectfont}
+\DeclareRobustCommand\sffamily
+ {\not@math@alphabet\sffamily\mathsf
+ \romanfamily\sfdefault
+ \if@ltj@match@family\kanjifamily\gtdefault\fi\selectfont}
+\DeclareRobustCommand\ttfamily
+ {\not@math@alphabet\ttfamily\mathtt
+ \romanfamily\ttdefault
+ \if@ltj@match@family\kanjifamily\jttdefault\fi\selectfont}
+%%% \eminnershape
+\DeclareRobustCommand\em
+ {\@nomath\em \ifdim \fontdimen\@ne\font >\z@
+ \eminnershape \else \gtfamily \itshape \fi}
+\def\eminnershape{\mcfamily \upshape}