Abe Abe Mikako loves cowgirl position. But she never has a chance to do it... If she gets a super full erection drug and lets him do it with his big dick, maybe he'll be able to insert it!? First, she tests it out by giving it to her brother to check the effect of the erection drug! She's pleased to see his rock hard dick in front of her! She gives it to her teacher and classmates too, and they can ride her as much as they want with their big dicks! She drinks it herself and becomes even more lewd, and her runaway mode of wanting to be pounded can't be stopped!