User blog comment:Xilinoc/Ch. 630 - The Twinned Twilight/@comment-25603404-20150611195423/@comment-26091912-20150612073904

@Am137400

That would explain a lot; especially why Haschwalth didn't hesitate to subdue Ichigo. As if to convey to us: 'That's how powerful I am, just you wait til his Majesty wakes up.' It seems once Yhwach goes to sleep, Haschwalth has to stand guard the entire time. That would also explain his unwavering devotion, and stepping in to protect Yhwach all the time.

Makes me wonder though; why does Yhwach still need to sleep to replenish his power? He's already king of existence, just how much more overpowered can he possibly get?