  With an appropriate hard scale, exclusive hadronic processes could provide
novel information of the internal quark-gluon configurations of hadrons. The
availability of 10-20 GeV secondary meson beam in the coming high-momentum beam
line of Hadron Hall at J-PARC offers an unique opportunity to carry out the
measurements of the exclusive hard processes. We address this interesting
approach by two possibilities: (a) $\pi^- p \to K^0 \Lambda(1405)$ for the
constituent quark structure of $\Lambda(1405)$, and (b) exclusive pion-induced
Drell-Yan process $\pi^- p \to \gamma^* n \to l^+ l^- n$ for the generalized
parton distributions (GPDs) of nucleons. Realization of such measurements at
J-PARC will open up a new way of accessing the internal quark structure of
exotic hadrons and also the nucleon GPDs based on a solid theoretical
foundation of perturbative QCD.
