Kokoro is a female tutor who is not only beautiful and kind but also very dedicated to her profession, even being loved and respected by all her students. This is common because of her easy-going and indulgent personality towards her students. This has made the moral distance between teacher and student almost nonexistent, but emotionally very close. The story unfolds when she agrees to tutor a mischievous and rebellious high school student in a wealthy family. Being in puberty, curious about sex and seeing the tutor dressed very provocatively, not wearing a bra while tutoring, the student often has desires and lust to "have" her. Of course, with creativity and perseverance, this is not a difficult task for this young teenager.