The Osaka Railway Bureau endeavored to keep trains made up of semi-cross-seat cars running, especially those using Kuroha 69, by gathering Moha 70 and Kuha 68 cars, but it was forced to eventually use type 72 cars.
中でもクロハ69組込の基本編成は何とかしてクロスシート車主体の編成を組もうと四苦八苦しながらモハ70やクハ68をかき集めるが、ついには72系の進出を許してしまう。