Board Thread:General Discussion/@comment-26091332-20160820062353/@comment-29702401-20161218200726

Think of reasoning behind Soul Suicide that the Visored and Masaki Kurosaki were in danger of. The actual problem was an imbalance wrought by a Hollow nature added to an otherwise positive soul... that is, that's how it was for the Visored, and they apparently had some time before they needed that vaccine of Kisuke's. But Masaki, a Quincy, also had a piece of Yhwach in her blood, a fragment that's there for the sake of taking Masaki's power for Yhwach himself. Unlike the Visored, that's a three-way spiritual imbalance. But Yhwach himself is... something else entirely. The way he can spiritually give like Shinigami do and spiritually take like Hollows do, he's already something smack dab in the middle of that spectrum. There's no imbalance that can be made worse by added Hollow in his case. Actually, now that I think of it, he's sort of like an Arrancar in that sense; they can evolve into Shinigami hybrids and assimilate Quincy powers without any problems at all.