Thread:ShonenChicoBoy/@comment-4666155-20180521062019/@comment-2089817-20180521214319

ShonenChicoBoy wrote: We don't even know if Zanpakutou Spirits can persist after their owners are dead. So to me, this is just way too far out there.

On this point specifically though, it's worth pointing out that Sasakibe died and his stolen Bankai could still be used long after he was dead. Maybe it was only days or weeks after his death, but it's still worth noting that the Bankai still existed even after his death.