\documentclass{beamer}
\usepackage{CJKutf8}
\usepackage{takahashi}
\newcommand{\stack}[1]{\begin{tabular}{@{}c@{}}#1\end{tabular}}
\begin{document}
\begin{CJK}{UTF8}{bsmi}
\takahashi{\stack{Takahashi\\高橋}}
\takahashi{\stack{Beamer\\簡報}}
\takahashi{\stack{Better \onslide<2>{together}\\相輔\onslide<2>{相成}}}
\end{CJK}
\end{document}
