Tsu Station

Tsu Station is a junction passenger railway station located in the city of Tsu, Mie Prefecture, operated by Central Japan Railway Company, the private railway operator Kintetsu and the third sector Ise Railway. The name of the station is considered the shortest in Japan because it is the only station name that is written with one kana, even though other stations have shorter names when written in Latin letters, such as Oe Station.

Source: Wikipedia