*Fumie Murata¹, Toru Terao², Hatsuki Fujinami³, Taiichi Hayashi⁴, Haruhisa Asada⁵, Jun Matsumoto⁶, Hiambok Jones Syiemlieh⁷ (1.Faculty of Science and Technology, Kochi University, 2.Faculty of Education, Kagawa University, 3.Institute for Space-Earth Environmental Research, Nagoya University, 4.Center for Southeast Asian Studies, Kyoto University, 5.Faculty of Letters, Nara Women's University, 6.Tokyo Metropolitan University, 7.North Eastern Hill University)