Endo and Kobayashi decide to muster as many forces as they can against the Witch, we learn about several more characters' dramatic backstories, one extremely cute ally is recruited, and we start delving into even deeper levels of the backstory, the myth of creation.
I think this volume is the first time we see Sieg being jealous (of Fabian, who turns out to get along really well with Liese). Sieg usually is a lot more grounded, compared to Lieselotte's inner struggles and her tsundere swings, but this is a nice reversal that really shows how far he's fallen for her. Also, Fabian is super cute here, both when he's wary and when he's relaxed.
Love how well the mangaka adapts the story for the medium here, for example in parts that in the novel were almost pure exposition, the manga illustrates them with examples and what-if scenarios and makes them lively and funny. And I cannot leave without giving them high praise for the faces; both those silly and those full of emotions are done so well!
I think my favourite part was Fiene beating up both Marquis Riefenstahl and Baldur when they start fighting over who decides who she's going to marry, while wearing a frilly dress, and then dressing them both down for not respecting that it's her and only her decision to make. <3 A close second would be the first meeting between Fabian and Cecilie, and the way she gets him, both his strength and his kindness. That was a really touching moment, and one I believe might have been expanded from the novel. The third would be Sieg asking Liese's family about what would make a good gift for her, and getting very Riefenstahl answers.