At the same time, it seems that the arrangement of returning and quarantine time is still under negotiation? (at least skaters training overseas are now able to return to Japan or at least they've made the plan to return...)
The mandatory quarantine period is 2 weeks for returning athletes but they are now allowed to practice during the period as long as strict guidelines are in place.
待機期間の練習可能へ スケート日本選手(共同通信) - Yahoo!ニュース
来年2月の北京冬季五輪を目指すフィギュアスケートとスピードスケートの日本選手に関し、政府が海外から帰国後の待機期間でも徹底した行動管理を条件に練習を可能とする方向で調整していることが3日、関係者へ
news.yahoo.co.jp