 While planned as the first of two phases of construction, the segment between Itakano and Imazato alone cost ¥271.8 billion to build.If the extension of the line to its intended terminus at Yuzato Rokuchōme were to continue as planned, assessment and construction would have cost an additional ¥132 billion, substantially increasing the financial burden on Osaka city.For this reason, then-mayor Junichi Seki ran for re-election in 2005 promising to bring the planned line extension up for review.