there are approx 200 Rohingya people in tatebayashi, gunma. and are approx 700-1000 Kurdish in warabi and kawagushi, saitama. i dont think they will become vanguards of ISIS. i personally support accepting muslim immigrants to countervail c and k ones.
Errrr, that is more accurately "Cult offshoot of Islam which believes that the Islamic messiah manifested in British India in 1890 as a sign of the coming* apocalypse builds a mosque in Nagoya." Unless 800 worshippers > 1200 worshippers, I am sure that the Camii Mosque in Tokyo is larger. The Ahmadiyya are subject to persecution as heretics in many parts of Islam: in some places fundamentalists regard them as heretics, in other places they are viewed as dangerously fundamentalist.
* coming = in another millennium. Christian doomsday cultists can relax.