MIFD-236 Teaching a private to suck a cock

I am an active nurse, but my hobby is survival games! She also enjoys ballet and dancing, and what she wants to do next is... Etch! AV is launching! Recently, she seems to be addicted to vaginal training, and her vaginal condition is very good. Serious-chan is the type who wants to investigate thoroughly, who has prepared a perfect vulva to shoot. It's even more thrilling than being the target of an enemy in survival games! And when the cock is first inserted into the fake vagina... the tightness is very dangerous!