User blog comment:Xilinoc/Ch. 685 - THE PERFECT END/@comment-493809-20160804210053/@comment-29449108-20160804211055

Here's a dark though - Yhwach said anyone who followed him through the portal, he'd seek out the point in their future where they're happiest and kill them there. Renji looks pretty happy there anyway. Maybe this is that, maybe this is the moment the Bankais were all broken. Not likely but it would be a real sting in the tale for the series, not many major stories with a bad (as in sad) ending like that.