Remember the guys who were setting up drainage pipes last month?
Apparently their work is being inspected today. Two men from the Tokyo Waterworks department are walking along the retaining wall where the pipes are installed. They are examining a big patch of bright green the moss that grows where the water spills over the wall. I suspect they are not pleased.
They are armed with a Polaroid camera, a checklist on a clipboard, and a measuring tape. They are busy measuring moss, distances and poking around. They seem completely oblivious to the traffic that skirts around them as they crouch low to peer into drains.