Reaching Kitakata City by public transport is easy!
From Tokyo Station / Ueno Station
From Tokyo, take the Tohoku Shinkansen to Koriyama Station (under 90 minutes).
From Koriyama Station
You need to take a train on the Ban’etsu West Line from Koriyama Station.
Although Kitakata Station is on the Ban’est West Line, it is likely that you’ll have to change platforms at Aizu-Wakamatsu Station.
But regardless of whether you need to change platforms or not, you only need to buy 1 ticket at the ticket machine.
The train from Koriyama Station to Aizu-Wakamatsu Station takes 80 minutes, and from Aizu-Wakamatsu to Kitakata Station it takes another 16 minutes or so.
Getting Around Kitakata Station
Here is a English-language tourist map produced by Kitakata City Tourism Association