Oh my frick, I just realized something. This is just a prediction but also a possible SPOILER based on how this manga has been going.
I'm pretty sure Leo is gonna die.
This manga seems to want to Flanderize everything fans loved about most magical girl deconstructions. Subtle yuri undertones to full on yuri. The sadist antagonist (in this case also our protag) doesn't just torture people, they literally orgasm while torturing people. There's usually one death of a beloved girl on the protag side in magic girl genre and deconstruction of magic girl genre. Its Leo. And I think her agreeing to get a room with her was a signal that she knew she probably wont make it back alive. I hope I'm wrong but we got full blown sex scenes where we only had foreplay before. This manga is escalating quickly. I just hope it's not getting axed