Synopsis: The Sweet smell rom your body makes me wonders....

Thanks for Boyfriend Kasushi's elder, Gana is introduced to a wealthy family and becomes the private teacher of Toshi. A top-notch students, he wants to learn "the truth meaning of life". His research topic is "female urethra". He claims the images offernot enough understanding and insists to see the real thing. Though confused, Kana takes off her underwear.....