\begin{overpic}[width=0.49\textwidth]{tour-05} \put(1,74){\colorbox{white}{(\sublabel{tour-05}) \href{http://dream.misasa.okayama-u.ac.jp/?q=20210114024726-774682}{tour-05}}} %%(\subref{tour-05}) \href{tour-05} \color{red} \end{overpic}