The area to the far left facing main stage past the line connecting the shite-bashira and the fue-bashira. On the far side of the atoza is the kagami ita on which the oimatsu is painted. The height of the ceiling grows lower moving upstage and acts as a soundboard. The hayashikata sit in front of the atoza, with the fue, kotsuzumi, ōtsuzumi and taiko performers sitting in order from right to left. The kōken sits behind and to the left of the atoza in a space called the kōkenza. The seams between the planks of the main stage run vertically when facing the stage, and as the seams are perpendicular to the atoza, it is alternatively called the yokoita, or “side board.”