A couple of special episodes that came on Senran Kagura BDs. In the first OVA Katsuragi does a medical exam of Asuka:
And in the second OVA Yagyuu is trying to cover Hibari’s nudity:
There is a little bit more of fanservice than in the TV episodes, but for this kind of specials it’s really not enough. But there is some humor, so we can be satisfied with it.