The ICNSP, the international Conference on Numerical Simulation of Plasmas, has been held every two (or three) years, as a unique opportunity for getting together the leading scientists, young researchers as well as Ph.D students in the field of computation plasma physics. The conference topics include novel numerical models, methods, and algorithms for solving the complex and complicated plasma phenomena and their applications to laboratory, fusion, space, and astrophysical plasma.The 27th ICNSP will take place in Japan, and is welcome back after 19th ICNSP in Nara, 2005.