  We consider the case that $\mu$-$e$ conversion signal is discovered but other
charged lepton flavor violating (cLFV) processes will never be found. In such a
case, we need other approaches to confirm the $\mu$-$e$ conversion and its
underlying physics without conventional cLFV searches. We study R-parity
violating (RPV) SUSY models as a benchmark. We briefly review that our
interesting case is realized in RPV SUSY models with reasonable settings
according to current theoretical/experimental status. We focus on the exotic
collider signatures at the LHC ($pp \to \mu^- e^+$ and $pp \to jj$) as the
other approaches. We show the correlations between the branching ratio of
$\mu$-$e$ conversion process and cross sections of these processes. It is first
time that the correlations are graphically shown. We exhibit the RPV parameter
dependence of the branching ratio and the cross sections, and discuss the
feasibility to determine the parameters.
