Dear Wolfgang and Aditya, I’d like to ask about my problems since you know well about the fonts and the simpleslide module. I have used simpleslide module frequently without any problem, but not in this year. Today, I tried to make a slide using simple slide module again, but I have a problem. First, I define Noto CJK-KR as a bodyfont. Korean texts in the text has no problem. But Koreans used as a main Title and SlideTitles are not shown. The error messages are following: fonts > checking > char 실 (U+0C2E4) in font 'TeXGyrePagellaMath-Regular-2' with id 6: missing fonts > checking > char 용 (U+0C6A9) in font 'TeXGyrePagellaMath-Regular-2' with id 6: missing fonts > checking > char 적 (U+0C801) in font 'TeXGyrePagellaMath-Regular-2' with id 6: missing fonts > checking > char 수 (U+0C218) in font 'TeXGyrePagellaMath-Regular-2' with id 6: missing fonts > checking > char 학 (U+0D559) in font 'TeXGyrePagellaMath-Regular-2' with id 6: missing According to this log, it look for Korean characters in the math font which fails. If I set \definefont[BigFontOnehalf][NotoSansCJKkr-Bold sa 1.5] \definefont[BigFontTwo][NotoSansCJKkr-Bold sa 2] Then the following code has no problem. Of course, author, institution, and body texts are shown well as before. \setupTitle[title={\BigFontTwo 여기에도 수학이?}, author={정 달 영}, institution={숭실대학교}, date={}, ] \SlideTitle{\BigFontOnehalf 자주듣는 질문들} \leftaligned{\framed[]{\tfc 수학은 왜 배우나요?}}\vfill \midaligned{\framed[]{\tfc 수학은 누가 만들었나요?}}\vfill \rightaligned{\framed[]{\tfc 이거 어디다 써요?}}\vfill My question is that "Why it tries to use the math font for Title and SlideTitle?" Here is a simplified example. %font definition \definefontfamily[notoFont][rm][Noto Serif CJK KR] [ it={style:regular,features:{*,slanted}}, sl={style:regular,features:{*,slanted}}, bi={style:bold,features:{*,slanted}},force=yes] \definefontfamily[notoFont][ss][Noto Sans CJK KR] [ it={style:regular,features:{*,slanted}}, sl={style:regular,features:{*,slanted}}, bi={style:bold,features:{*,slanted}},force=yes] \definefontfamily[notoFont][tt][Noto Sans Mono CJK KR] [ it={style:regular,features:{*,slanted}}, sl={style:regular,features:{*,slanted}}, bi={style:bold,features:{*,slanted}},force=yes] %\definefontfamily[notoFont][math][Tex Gyre Termes Math] \definefontfamily[notoFont][math][Tex Gyre Pagella Math] \usemodule[simpleslides][style=Swoosh, font=, color=blue,] \setupTitle[color=darkblue] \setupbodyfont[notoFont,ss, \NormalSize] \setuppagenumbering[state=stop] \setupTitle[title={\BigFontTwo 여기에도 수학이? \crlf {\fancyOne Mathematics everywhere!}}, author={정 달 영}, institution={숭실대학교}, date={}, ] \setupfootertexts [\tfx FlexMath \hfill \pagenumber\ / \lastpage] \placeTitle \startcomponent \SlideTitle{\BigFontOnehalf 자주듣는 질문들} \null\vfill \leftaligned{\framed[]{\tfc 수학은 왜 배우나요?}}\vfill \midaligned{\framed[]{\tfc 수학은 누가 만들었나요?}}\vfill \rightaligned{\framed[]{\tfc 이거 어디다 써요?}}\vfill \stopcomponent