A reporter of Mainichi, a major Japanese newspaper, wrote about his experience of an international travel to Japan under the current border control regulations (as of March 2021). Quote: “Japan’s border controls … have been labelled “too lax” by some online. […] Due to cases of people being monitored by police officers during transportation to the hotels, and because surveillance agents standing in the accommodation hallways, some call it ‘forced quarantine.'”

‘Forced quarantine’ at Japan’s border: A returnee’s experience coming home (Pt. 1 – Pt. 3)
The Mainichi on Tuesday, April 13, 2021

https://mainichi.jp/english/articles/20210412/p2a/00m/0na/024000c

https://mainichi.jp/english/articles/20210413/p2a/00m/0na/015000c

https://mainichi.jp/english/articles/20210414/p2a/00m/0na/023000c