A Good Hentai Smack
At first I thought the ghostly figure behind her was smacking her ass during a sex bondage session, but then I saw that her panties are still on, so perhaps the potential sex is just an illusion of perspective:
See Also:
Spanking Blog: Adult Erotic Spanking At Its Best
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Ah, but sometimes panties can be cut open a little so there is a hole in them.
Not to plug for the sake of it, but for hentai spanking fetishists there’s always animeotk.com.