The part of the body that is located on the back of ones leg, directly behind the kneecap. It is one of the most useless yet most interesting body parts known to man. It is also abnormally sensitive.
Stop it, my xephon is ticklish.
Could you stay away from my xephon? Its so sensitive right now
From RahXephon: The proper name for the mecha Kamina Ayato pilots in RahXephon until Kamina achieves Yeoteotl.
The Xephon has the ability to shoot energy arrows and create an energy barrier among other things.