Abstract
Following up Hayabusa's heritage for asteroid sample return, the 'Minor Body Exploration Working Group' was officially approved this March, in order to design and propose a next generation minor body exploration mission by the end of FY 2006. At present, strategic developments include a sampling mechanism to retain stratigraphic information on a C-type asteroid surface and a rover system to observe the filed of occurrence of samples. This talk discusses its scientific objectives, possible mission targets, and status of such strategic developments.