SPOILER
From what I could see I think the brother sent out assassins to kill the brother and they succeeded. The uke died in his arms and right after his death he fully manifested his orb to give to him. After the super depressing moment, we see how he agreed to protect his family (the younger sister mostly fuck the brother) and they marry (this is where the ritual of offering a bride came from) but he's such a mess for centuries that the trauma of it all finally to him. Then we see him wake up from his slumber in the modern world. That's the end of ch.56
Edit to my spoiler:
So it wasn't the brother but head Butler(?) That sent the assassins bc they show him wearing a board around his neck and he's kneeling so he's being convicted and the brother is standing in the middle of the woods so I guess he'll unalive him. Now they're scattering to get a new emperor so in another panel a baby sitting on the throne. So from this I would assume she asked for the dragon's help and it seems like they married/she's reagent (this part is a little off to me)

someone please tell me about the spoilers ive heard bad things