ooi kai ni (kancolle)

Ooi's Kai Ni form, differentiable from base and Kai forms by her bared midriff and lighter colored serafuku.

Much like her sister Kitakami, they change to a khaki and dark green uniform that shows their midriff. They now have quintuple torpedo launchers instead of the quad torpedo launchers.

This tag implicates ooi_(kancolle) (learn more).