9 kids? You want him to bring her a 9th one? I understand that she offered since she saved everyone, one of the kids as well but NINETH? Why I bring up 9th? She's not gonna wear a condom. Dude's a vigilante, and I've read superhero comics and watched their shows. They live as if they have no tomorrow as they plan for tomorrow. They're allergic to condoms and other birth control
Maybe a shaped charge pushing the majority of the force between the cracks in the doors, forcing an internal overpressure pushing the doors open?
Or maybe it's the mangaka not wanting to figure out how those doors would look bent inward, who cares, it's not like the direction the doors opened matters rn