The Key
鍵
The Key Online is Free Kanda, an elderly teacher whose manhood is beginning to fade, loves his young wife Ikuko, but finds himself unable to satisfy her high libido - Until he discovers the world of spoiled cuckolds.
- Genre: Drama
- Country: Japan
- Director: Hiroki Inoue
- Cast: Shingo Mizusawa, Yuki Mamiya, Atomu Mizuishi, Mone Akitani, Yuki Masuda,