About eight were arrested in Tokyo for being involved in a cryptocurrency pyramid investment scheme. The net worth of the project was 7.8 billion Yen.
source https://www.google.com/url?rct=j&sa=t&url=https://thecurrencyanalytics.com/3624/cryptocurrency-pyramid-schemes-scrutinized-in-japan/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNG4O3u73xV3gOdD5euXfklTz_CGog
