While approaching the train station wicket ​area, I noticed a curious poster on the wall.

暴力 (BouRyoku) - Domestic Violence

The sign basically translates: “Violence… don’t want to see.” I find it curious because it’s very rare to see any kind of altercation on the trains. But apparently, it has happened. I can not think of any reason why they would post such a sign unless some type of “violence” had occurred on the trains. Almost every train stop has a Police box. So, any kind of trouble would be quickly dealt with by the cops.