In accordance with the Payment Services Act that is in effect in Japan, Rakuten received a license to operate a cryptocurrency exchange in March.
source https://www.google.com/url?rct=j&sa=t&url=https://blockonomi.com/rakuten-opens-registration-for-cryptocurrency-wallet/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNFsKwlOb0WiswDnuPOWsEJf7bAdFQ