Hell yeah Seras and Bernadotte! I love that their arcs as character came to a climax here, the mercenary group as a whole being solely motivated by money but being entered into this supernatural religious world-ending war and having to deal with being grossly underpowered. Millenium has supernatural monsters, the Catholic Church really isn't "human" with a bunch of religious bullshit strewn everywhere, but the mercenaries feel the most relatable. Greedy, in it only for the money, no real morals, but no powers of their own either. Hopelessly outclassed and doing your best to keep it together as everything and everyone you know dies around you, is there anything more human than that desperation to survive when you have no real control over the situation? And unlike all the other vampires and ghouls, they don't sell each other out. It's great to see!
Oh and, yeah, Seras Victoria becoming a complete badass. Her development is late to come but with finally seeing her backstory she really owns this volume and, hell, I'd say she's the most compelling character in the series at this point.