Marjorie Liu’s 2021 Monstress, Volume 6: The Vow collects Monstress: Talk-Stories #1 – 2 and Monstress #31 – 35.
When we left our characters, the (mainly human) Federation of Man was once again at war with the Arcanics, whom the humans consider to be useful magical fuel. Too bad the fuel is contained within monsters who don’t want to be destroyed in processing.
Next on the Federation’s list for conquest: the city of Ravenna. Understandably reluctant to be painfully converted to lilium (the magical fuel), the Arcanics put up a heated defense.