When will my sister stop being an idiot and leaving Kaikan Phrase around where my mother and father can see/read them?

Vicki, you're a sweetheart and I love you dearly, but are you stupid? Do I not ask you to keep them somewhat hidden? Did you not already get the hint when Dad picked one up and ask you about it? Must you keep doing it so that now Mom has caught on and starts yelling at me on the phone about it, even all twelve books are liberally scattered in your room?

Why is everything constantly my fault? Why won't my mother let my books be, just because they're somewhat graphic? Her romance novels go more indepth and are more graphich than any of the manga that I own.

Honestly.