The 321 series (321系?) is a commuter electric multiple unit (EMU) train type operated by West Japan Railway Company (JR West) in the Kansai Region of Japan.
Read more about 321 Series: Overview, Operations, Formation, Interior
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“As Cuvier could correctly describe a whole animal by the contemplation of a single bone, so the observer who has thoroughly understood one link in a series of incidents should be able to accurately state all the other ones, both before and after.”
—Sir Arthur Conan Doyle (1859–1930)