Abducted Teacher (3D Anime Main Shop)

A teacher named Yuuna-sensei is giving an English grammar lesson about countable and uncountable nouns, as well as regular and irregular verbs. A student named Tanaka is distracted. The scene shifts abruptly: Tanaka is abducted by aliens who use cloning technology to maintain their race. They offer him any woman he wants. He is then placed in a situation with his teacher, Yuuna-sensei, who is embarrassed and restrained. The aliens subject them to humiliating commands, including a degrading sumo ring-entering pose and other acts. Yuuna-sensei protests but eventually complies, hoping to return to Earth.