All Kumiko wants is to become a teacher; however her father is dead set against it. He is giving her one chance to prove herself as a teacher before forbidding her from pursuing this career forever. Meet her newest student, Ryu-kun. He has NO desire to LEARN anything from his tutors, rather he is an expert at teaching THEM about...SEX?!
Note: The story was originally released as a single short story, but it later became a series.
Dangerous Equation Sex=Love2 Sex=Love^2
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