Board Thread:Boruto Discussions/@comment-1512913-20190608172919/@comment-1512913-20190611061228

People jumping far too quickly to conclusions that Jigen is an Otsutsuki/Kaguya's partner. First, he looks nothing like an Otsutsuki.... why would he take on natural form only while absorbing this 2nd Ten-Tails' chakra? It's more reasonable that he is a human and he takes on an Otsutsuki-like form for the same reason as Obito and Madara did. From the dialogue, Jigen's fate is to be devoured by this 2nd Ten-Tails once he is done doing whatever he is supposed to do. So it's much more likely this 2nd Ten-Tails is Kaguya's partner instead of Jigen, with Jigen being Kaguya partner's servant possibly who is temporarily using his power, kinda Obito-Madara relationship.

Also as far as we know so far, only humans can get Karma killing an Otsutsuki, it wouldn't really make sense for an Otsutsuki to get Karma killing another. The current theory is that Jigen will be able to reincarnate into Kawaki using Karma and Momoshiki into Boruto. So an Otsutsuki getting a Karma from killing another would just jeopardize their own life if true.

Asura killed Indra/Indra killed Asura (they killed each other, but it's unlikely both died the very same second, so one of them was most likely still alive at least moments after the other's passing) no Karma as far as we know. Hamura's descendants kept killing each other, no Karma as far as we know.

From this we can conclude either of the following:
 * Otsutsuki themselves cannot get Karma
 * only killing pure-blood Otsutsuki grants Karma and mostly human hybrids like Asura, Indra and Hamura's descendants cannot pass this power

How do you define an Otsutsuki anyway? Having such last name? Descendant of the clan? Toneri and other moon people were mostly human anyway, but Urashiki considers Toneri a member of the clan.... Naruto and Sasuke, Hyuga etc. are for the most part human Otsutsuki descendants, yet they are seemingly not considered to be part of the clan by Otsutsuki.

Make your own conclusion.