Sex=Love2; Sex=Love^2

Synopsis

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 for ever. Meet her newest student, Ryu-kun. This student has NO desire to LEARN anything from his tutors, rather he is an expert at teaching THEM about...SEX?! (Source: ShoujoMagic)