Bit late on the commenting but great lesson there and awesome to see Imabari! I thought I recognised it from the video :)
I lived in Hashihama for a year in 2005, where I worked for local shipping electrics company Uzushio Denki (http://www.bemac-uzushio.com/), so the place holds some good memories for me. Is 松本丁 still the seedy dive it always was?
I'll hopefully be making it back sometime this year :)