Marina Yuzuki finally unveils her anal debut! As she applies a cream given by her students to soothe her aching ass, time passes and her anus becomes increasingly hot and painful. It turns out that the cream was actually a pheromone cream accidentally provided by one of the students. Her sensitivity skyrockets, causing her to become obsessed with the pleasure coming from her anal region. Despite knowing it's wrong, she can't help but tease herself with fingers alone and eventually starts begging her students for cocks or toys to satisfy her desires! Note that the recorded contents may vary depending on the distribution method.