So magic/spells are different from Shinsoo and Zahard probably made it taboo after Arlene left. Although we know Arie Hon had a spell book in his home that Haoquin found to use to become white. It'd be interesting if that is the secret to true Arie swordsmanship, magic and that's why only selected ones in the family learn it. Also, the 13MS he had made uses very strong magic. I wonder if magic is available both inside and outside the tower? It could be magic was the original power in the tower then its use faded after Zahard.
Back to the 13MS weapons. We get to see the beings inside them again. We know now that they do not truly feel the presence of the others until they ignite. Also they are fully aware of the curse. It's interesting they mention Yuram, who was killed by Garam apparently because she went crazy from igniting 2 weapons at once. Yuri is a complete idiot, but what was interesting is the very distinct personalities of the weapons, with Green April reluctant to let Yuri go crazy and Black March all for it. Manschenny is the other princess with 2 weapons and is planning something, including her big bet with Yuri, maybe she's already been touched with madness.
The real question is who is the chosen one to collect the 13MS?
I saw a theory that maybe Hell Joe and friends are getting their power from drinking guardian blood. That would be pretty interesting. I wonder how he'll react when one of his own dies. also it seems Sachi and co have an additional plan as well.
Back to Yuri, there's a lot of death flags, but I don't think that will happen at this point, but there needs to be some consequences for her recklessness. Maybe Garam is forced to intervene if she really goes crazy. Otherwise Karaka, Hell Joe by manipulating the pipes, or White could be real threats.
I wonder what Garam left out of that giant info dump she gave Baam and what her true goal is besides just seeing the end of the slaughter of her sisters.
The pace of this arc is extremely fast and it seems we have plenty left to learn in the coming chapters and Urek is still making his way to the floor.