Ushiro Takatekote is the basic or foundational Kinbaku form of binding the arms and breasts, in which the arms and hands are bound behind the back.
The term Ushiro Takatekote is made up of two Japanese words: 後ろ which means "behind the back" and 高手小手 which means "bound hands and arms".
This behind the back "box arm tie" as it is sometimes referred to in the west is based upon ties originally found in the samurai martial art of Hojōjutsu or Nawajutsu, which later evolved into its erotic usage at the end of the 19th century and early 20th century.
It is foundational to many other Kinbaku ties. The expression, Ushiro Takatekote is sometimes mistakenly and incorrectly referred to as "Shinju."
This position is easy to hold and allows a safe and very secure bondage. It is often used in complex ties where the subject is required to hold the position for a long time.