Desc: The Key -Professor's Pleasure- (Kagi): Directed by Hiroki Inoue. With Mone Akitani, Yuki Mamiya, Yuki Masuda, Atom Mizuishi. Kanda (Age 45) an older professor whose strength and virility are starting to fade, loves his younger wife Ikuko (Age 32) but finds himself unable to satisfy her strong libido.