A Ph.D student of University of Tokyo, working together with us, went to the third International Conference on Cloud Computing, GRIDs, and Virtualization (CLOUD COMPUTING 2012), held in Nice, France, 22th-27th, June 2012, and gave a talk about a storage caching mechanism that strongly supports mobile computing based on live VM migration. This joint work explores a new frontier of cloud computing supported by advanced virtualization technologies.