The purpose of this research is to realize a "Cocreation System." Co-creation means co-emergence of real-time coordination by sharing subjective space and time between different persons. Human communication with emergent reality like this is essential to improve communicability in social systems, and we assume such communication needs two kinds of information process at the same time. One is explicit communication such as the transmission of messages and the other is implicit embodied interaction such as the sympathy and direct experience. The conventional IT system mainly covers the former process but we have been pointing out the importance of the latter process. Especially, this implicit process is related with rhythmic interaction between humans, such as entrainment of body motion. From this background, using these implicit and explicit processing complementarily, we are developing co-creative man-machine interfaces and communication media. We think this dual-processing based new technology will be effective for recovering human linkage and mutual-reliability that has been weakened in modern IT society.