Her anus, which started at 1cm, gradually expanded to 3.5cm as the cock went in and out.
"Teacher... don't you want to have sex with my ass?"
On the day of the entrance ceremony, it's surprising that a gloomy girl who isn't usually proactive is so eager for anal sex.
Beyond what her soft, smooth skin suggests, once the cock is forced into her widened anus, the tight intestinal walls immediately grip the meat and won't let go.
Since it's the anus, there's no problem with creampieing inside.
For a girl of her age, everything—what will be done to her and what she will do—will be a fresh and vivid memory.
As she is taught the pleasure of her ass hole and a sensation that cannot be tasted in the pussy, her future student life might be in trouble once she knows the truth.
