Even Kiriha and Madarai looked like game over. And let's not forget that this is only half of Oriobana.We already knew she was dead from the beginning of the arc, but I still had some faint hope something could be done
It's all author, editors have to reign in his desire for nudity.I imagine the editors went something like "there hasn't been nudity in ~3 chapters, there needs to be some this chapter" and the mangka thought hard about it, and went "i know, naked corpse!"