Anal sex with a 15 year old during her period

The guy brought the girl home for romantic sex. During foreplay, the girl reports that she can’t have sex now because she’s on her period, the guy suggested anal sex, the girl asks how is that? He bends the girl over, gently enters and the girl asks to stop! but the guy has already gotten the hang of it and is not going to stop. The girl suffers anal pain and puts on panties in the end
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