So it seems the purpose of that seal on Licht is for this day. Well... that Grimoire does looks like a open book!. Julius said his magic is time stealing magic. He steals the time and stores it away and can use whenever he wants to!. If we take what Julius said about his magic into consideration.... maybe because the open form of that book is due to this!. Well.. from what Julius said in this chapter there seems like a lot more of Time Variant Magics like that!. Maybe a Time Giving Magic(lol).
Initially, I thought Yami was already on his way to the Capital Palace but this chapter showed otherwise. Is it really that long?!. Licht is planning to attack the people of Clover with that huge attack. Most likely Julius will save them and gets hurt instead severely. Or the captains might shield the people from that attack. I doubt Yami would cut it down tho even if he wanted to because that attack's range seems bigger than what he faced off in the Water Temple arc!.
I wonder what's happening to Meleoleona and Co.