The Executioner and Her Way of Life, Vol. 2 (manga)

A terrorist attack on a train to Garm disrupts Akari's journey home, forcing her and Menou, an Executioner, to confront a foe summoned through forbidden magic. As the train spirals out of control towards a collision, they must unite to avert disaster. However, this harrowing event unveils a deeper, sinister conspiracy targeting both of them, setting the stage for a tumultuous adventure filled with danger and unexpected alliances.