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This is a collection of trains running on the Yotsubashi Line, Sennichimae Line, and Tanimachi Line, which are third-rail subway lines of Osaka Metro (formerly the Osaka Municipal Transportation Bureau). It is well-known that the tracks of the five third-rail subway lines of Osaka Metro are connected. There is an issue with the number of cars, but in the end, direct operation is possible, so I think there is a small possibility of future development compared to the two linear drive lines. The unupdated new 20 series cars may be retired when the 30000A is transferred from the Chuo Line!