Why you should reach out to old friends
https://edition.cnn.com/2022/07/30/health/reach-out-to-old-friends-wellness/index.html
In Japan, some people might think that sudden contact from old friends can be promotion of multilevel marketing or new religious movement.
So, they try to avoid close relationship until safety is ensured. Especially, amid broadcasting of Unification Church, more and more people pay attention to such promotion.
It would be much more difficult to reach out to old friends.