I evolved the no-hand-boxing with a friend. He has had a problem with the interpersonal relation due to a trauma, and sometimes could not help but reflexively punching someone who suddenly touched him. After he confided me that, I tried to actually and spiritually get close to each other in order to overcome our risk of communication by the boxing.
This attempt was not based on defined rules, but was made as a physical dialogue to reduce that. At the performance, I expected that the meaning of this performance might be represented by our fighting-code (unspoken rules) which came up through that. The restriction by ambiguity of the code was assumed in our relationship of trust to avoid having to take the risk of his panic while intentionally running the same one.