Immoral Study: Scenario 2: Iijima Yuka

You play "Professor" Hitosuji, well-known reputed tutor and teacher for his abilities in turning even the worst students into straight A stars...although it might be just a coincidence that all those girls happen to be very young and beautiful students. His "private tutoring skills" might be somewhat questionable, but it works.

In Immoral Study 2, the task at hand is to tutor one Yuko Ijima, the only daughter of a big time factory CEO. She's been slipping in her grades lately and her father called you to put her back on the right track again. Oh, she has a major attitude problem. Nothing you can't handle though.

Another linear hentai game where all you have to do is click on the mouse from beginning to end, which surprisingly is a very short game by the way (less than an hour). It does come with voice support and pretty nice animated graphics, although it is partially censored.