It is in the scene where Hotaru climb up the hill with his father and mother. Chapter 12, 10 minutes, 37 seconds. The Michibushin represents manual work such as mowing, pruning or restoration of roads and canals. It is not a well-known term for big cities, but it happens 2 to 3 times a year in the countryside. This is the landscape to the west from the position on the map.