It is operated by the third-sector Tosa Kuroshio Railway with the station number "GN32".

[4] The station consists of a side platform serving a single elevated track.

There is no station building but a shelter with both an enclosed and an open section is provided on the platform for waiting passengers.

[2][3][5] Each station on the Asa Line features a cartoon mascot character designed by Takashi Yanase, a local cartoonist from Kōchi Prefecture.

The mascot for Yasu Station is an angel with a round yellow face like the moon.