Two voices guide the morals of lovestruck teen Kenta Kodama - the voice of "virtue", and the voice of "sin", which beckons him into temptation...... and they've been fighting daily in his head. Just when the serious, straight-laced but naive voice of virtue is struggling against the advances of the sexually-rampant voice of sin, their host Kenta hits puberty and his libido shoots sky-high! What happens to the power balance between "virtue" and "sin" when the tables are turned......!? This is a super-salacious romantic comedy that anthropomorphizes worldly desires!