Chibadera Station has a single elevated side platform serving bidirectional traffic.

Ohda Station has a single side platform serving bidirectional traffic.

Fujisaki Station has an island platform, but only a single track is in use, serving bidirectional traffic.

Platform 1 is the primary platform, and used for bidirectional traffic.

Hirokōji Station has a single side platforms serving bidirectional traffic.

Fusamoto Station has a simple side platform serving bidirectional traffic.

Shimokita Station has a single island platform, of which only one side is in use, serving bidirectional traffic.

Ide Station consists of a single side platform serving bidirectional traffic.

It's because the underlying protocols all assume bidirectional traffic.

Kazusa-Mitsumata Station has a single side platform for bidirectional traffic.