Never!!!

I'm just guessing but it might be her way of getting through Japan's censorship laws.

Well I dont think so... if you recall some sex scenes from NanaoXkuon or ShinonomeXYukimura stories, even if they are not naked we do see some anatomical part if you know what I mean, so I dont think that the censorship is the issue here haha! (⌒▽⌒)

Maybe its the whole 'i-can't-wait-to-have-you' vibe she's got going on with her characters? Not to mention they're not always in a place suited for 'bedroom' activities. Can you imagine the table/floor/concrete-burn?

hehe you made me laugh... I think thats explication is more likely to be true ^^ and you are right the bed thing does not come often lmao... concrete burn ε=ε=(ノ≧∇≦)ノ