As you can see there is a great deal of online Forex Brokers and it is very difficult to choose one to entrust money. What we should pay attention to is reliability of a company you are going to work with. Some people say that Japanese Forex Brokers are very reliable. As we can guess this opinion is based on the fact that in Japan there is a very strict Broker regulation by FFAJ. 

Another reason why clients choose a Japan or Japanese Language Forex Broker is that they are native Japanese and they need a Forex Broker supporting Japanese for ease of communication and in order to avoid language barrier. 

Here is the list of Forex Brokers talking Japanese.