Citizens of certain countries are required to obtain a visa to enter Japan.
Please check the following website of the Ministry of Foreign Affairs of Japan (MOFA) to know if you need to obtain a visa and the visa application procedures.
1) Exemption of Visa (Short-Term Stay): http://www.mofa.go.jp/j_info/visit/visa/short/novisa.html
2) Visa Application Procedures: http://www.mofa.go.jp/j_info/visit/visa/index.html
If you need a visa to enter Japan, please contact Visa Support Office of IATDMCT 2017 (firstname.lastname@example.org) by e-mail.