EXO Japan Debut At the End of 2015? Be success for three years in Korea and China, kpop boyband EXO ready to expand their career to debut in Japan. Reportedly, EXO debut in Japan is being prepared and will be launched before the end of this year. The news was made by a source told Sports Donga on Wednesday (26/08/2015). In the midst of their busy schedule to rehearsal concert 'The EXO'luXion', EXO also preparing for their Japanese debut.