A student of Hokkaido University receives an interview from Tokyo Metropolitan Police Department, because he traveled for Syria to join Islam State whose purpose is to unify the world by their force. The student said that I intended to join Islam State and work as combatant. Surprisingly, the reason why he attempted to join it is only that he failed in job hunting. Also, the person who introduce for him about Islam State is ex-professor of Doushisha University. Although the participation in Islam State is only one in Japan, the participation is increasing in the world. The United Nations criticized Islam State for having excuse many prisoner.