This technique allows Mū to literally split his own body into two identical yet entirely independent parts. Unlike Clone Techniques that only appear to be similar, the ability is instead a physical separation and so does not require hand seals to activate, making it faster in comparison as a result. This also means that even if one is incapacitated, the other remains completely unaffected and as neither can truly be regarded as the original, the duplicates cannot be dispelled like normal clones. However, while splitting, Mū's power is halved and as such he is unable to use more complex techniques like his Dust Releasekekkei tōta.
It should be noted that if one of the halves is subjected to a sealing technique, the two halves cannot reunite.
In Tankoubon pure volume 59, page 47, this technique is called 'Bunretsu Jutsu'.