Board Thread:Naruto Discussions/@comment-32617252-20180630010918/@comment-6769189-20180701100309

Like i said, the bijuu have SIMILAR principles as shadow clones.

Even shadow clones have souls as the Reaper ripped souls out of Shadow Clones.
 * Shadow clones are beings made of chakra. Bijuu are beings made of chakra.
 * Shadow Clones have souls that the Reaper finds to be acceptible sacrifices.
 * Orochimaru can basically bring himself back to life with chakra he has sealed in other people. After marking Sasuke, there could have potentially been 7 more Orochimaru's in existance.

Apparently chakra does have a soul. That is probably what the spiritual energy portion of chakra is. It seems the only difference between Shadow clones and Bijuu are that Bijuu are self sustaining and arent copies of the creature they were created from