(Warning: mild spoilers.)

From Author:

Why did Kaede (Sakura) lose consciousness?

I concur that we don't have enough information. However, there seems to be a striking pattern that Kaede drops out of the action just when her nose would otherwise be rubbed in the existence of Kampfers, and I doubt that this is a coincidence.

I continue to think that Akane was not shooting seriously for whatever reason. Otherwise, she is an embarrassingly bad shot; has she hit anything meaningful?

(Since Kampfer seems to be mostly a comedy anime, we could be overthinking all of this. Convenience coincidences and comically bad shots are a stock in trade of ordinary comedy.)

From another Author entry and what it points to:

Natsuru has not yet taken showers/baths as a girl. And this is supposed to be a real full-blooded hetero adolescent?? What gives??

He wasn't able to keep the transformation or transform at will previously, so showering was out of question.

Natsuru seems to have gotten much better at transformations as of the start of episode 7; it looks like he can transform at will and hold the transformation at will, but he actually needs to be able to muster the will (which was his problem at night).

My take on his lack of showering et al is two-fold. Minorly, it's likely to be hard on his will. Majorly, it's not as if Natsuru is on his own, and we know that his entrails animal likes both making sarcastic comments and cheering Natsuru's development on, and imagine the potential for either or both if Natsuru deliberately goes off to shower as a girl on his own, no matter what actually happens or doesn't happen. There is much less utter embarrassment in avoiding the whole situation.

(We, and Natsuru, have no idea if entrails animals are aware of it when their person transforms.)

(On a side note, I'm (still) working on getting my followup to Author's reaction to my last entry on Kampfer to say what I want it to say. This writing clearly stuff is harder than it looks. I'm aware that this is somewhat against the spirit of quick reactions and rapidly jotted notes.)