Welcome to the world of trading,you dont sell the coins because you saw a steep fall in price,ripple does have an acceptance in the Japanese banking system and there is no doubt that the price would recover in the future,so you can either buy now and average your price or wait for the long haul.Hope you have noticed that all of the alt coins went down today.
So these Japanese banks were not accepting XRP when the price dumped to 600sat in January, this is a pump story make your money and run, the epic dump is coming is just a matter of when