I. Introduction
At present, contents in the diversified fields including VR game, image, education, national defense, medical service and art are generated at home and abroad and its research is under progress actively. Because VR hardware and software were developed rapidly and such game could be personally experienced with cheap expenses. In addition, it satisfies user experience by using high quality HMD (head mount display) such as HTC, VIVE, Oculus, Rift, and Gear VR. Under this background, a desire of trying to form inter-player social relation in VR, not a unilateral game play is being increased gradually and extension to play ground of communication is called for. In this study, an effective interaction method will be researched so that social activity would be realized through self-projected avatar in virtual space as immersion space of the players.