I just checked. The 9th tower Ezelipe first appeared in ch.18 in Zealark's recollection. In that loop she killed a child in front of Zeal as the latter is imagining a future in which the child comes back for revenge.
I think the love-hate relation between Junko and Hinako is still really strong. I think there was a short which is not translated about one of the previous timelines before savestates in which Junko killed Hinako and Elis went full rogue. In her despair, Junko whispered "Save me, Hinako". And...
I like Himawari. Frankly she is my favorite character in this manga. She is so complicated as if she is one of female protagonists walking right out of one of Dostoyevsky's novel. In particular, she reminds me of Nastasya from Dostoyevsky's The Idiot. Both are broken, hysterical...