Is the Ginjo shown in chapter 681 of Bleach a 100% Shinigami? By the end of the Substitute Shinigami Arc (Fullbring Arc), Ginjo was said to be dead, since Ichigo came to the captains' meeting and asked for Ginjo's body. Yet in chapter 681, Ginjo came with Tsukishima to help Ichigo. Does this means that the Ginjo in chapter 681 has turned into a 100% Shinigami, that is, he no longer is a Substitute Shinigami like he once was, but a 100% Shinigami since he is already dead and is a soul now?

(I guess 100% Shinigami is not a very good term to describe Ginjo since he was also a Fullbringer...)
The Wikia states that he gained his powers by stealing them from other soul reapers (according to  Suì-Fēng). He had to steal Ichigo's powers to get himself a Bankai. Simply going to Soul Society wouldn't mean that he would gain soul reaper status, since unlike Ichigo, it is not indicated that he had innate soul reaper family history and has not been given soul reaper powers after Ichigo got his back from him. However, the Wikia also states that


  When souls with exceptional spiritual energy train their bodies, they reach the level of Shinigami.


so since Ginjo is already trained and has exceptional spiritual energy, technically he should be a soul reaper as a soul. So, humans need to have soul reaper family history or someone to give them their powers to become soul reapers, but souls are innately able to become soul reapers with training and strong spiritual energy.