Old-n-Young - Passing test with a dick inside

Though Iris Kiss Kiss prefers to party hard the whole semester, time comes to pass the tests and exams. She comes to one of the teachers, hoping he will give her the best grade just because of her beautiful eyes, but he says no. Iris Kiss Kiss tries to beg him, but he says no. Finally, he surrenders to her charms and tells her there is a way out of this tricky situation, but it is tricky as well. He tells Iris Kiss Kiss that she needs to satisfy his sexual desires if she wants to get a good grade in return.