A day ago i've read some bad news two crypto exchanges in japan namely Mr Exchange and TokyoGateway are shutting down because of the tight regulation in the country. Mr Exchange seems to be operational but the TokyoGateway exchange seems to be down already. Some people in japan might've sell their coins because of the country's tighter regulations.
I thought Japan was a bitcoin friendly space, i am not sure these regulations are hurting the traders, most probably it is difficult for someone to start an exchange that easily and i suppose they have to pay huge sums of money as collateral to run an exchange and they were not capable to raise that much money and so they are stopping the service, i think that is the case here. The price drop is really disappointing but i hope it will recover in a couple of months.