Iku Iku Succubus

You are Tanehisa Busujima, a middle-aged teacher at a private academy who speaks his mind, and can't hide his massive dick and lusty thoughts. You ogle the thighs of female teachers when they wear tight skirts, and gaze at the pert asses of schoolgirls when they wear bloomers. Obviously, the accusations of sexual harassment are piling up, and you're on the merge of getting sacked. The principal leaves you with one option to continue your profession: become an instructor for an exchange student from the Succubus Kingdom. Most people don't know, but a land of lusty succubi exists. On top of that, the Japanese government is trying to solve the depleted birth rate problem by making a contract with these succubi, in hopes that the dream demons will make the young men uncontrollably horny. On the outside, the exchange program involves teaching the succubi about the human world, but in truth, the goal of the program is to reeducate failed succubi about the pleasure of sex. Clearly, your particular skillset fits the instructor role like a glove. Strap in, because this intense sexual class is in session!

Tanehisa Busujima is a middle-aged university professor well known for his lack of restraint and speaking his mind (for better or worse). His compulsions have put his job in jeopardy. The university's president provides him with a lifeline, though: Serve as an instructor for study abroad students from the Succubus Kingdom! Not present anywhere in the Human Realm, the Succubus Kingdom is located in an entirely different world known as the Dream Realm. This begs the question: why are there study abroad students from another world attending a university in Japan? Well, the Japanese government made a trade agreement with the Succubus Kingdom: the Succubus Kingdom is to assist in resolving the declining birthrate in Japan, and in exchange, the Japanese government will provide the Succubus Kingdom with male energy. And wouldn't you know it? Busujima, is a perfect candidate for supplying said energy. His responsibility as an instructor is to teach the foreigners about the Human Realm... On paper, at least. However, according to the program's director, Lima, his true objective is to rehabilitate failed succubi, and the two delinquents he’s in charge of will surely be a handful. Class is now in session!