page 11 : in a previous chapter , dwarf girl only said adamantine could protect them from dragon 's claws and fangs , not dragon 's fire .
you can see the protection spell is working in page 9 , panel 2 , and page 16 , panel 2 .
Looks like Senshi got his priorities totally wrong , and it is proven in this chapter : If he had Mithril ore , he should have made a big axe , or at least a long katana that can be use for both slaying monsters and cutting vegetables .
A small cooking knife , that can slice through the flesh and bone of any monster , is useless if the monsters dont lay dead to be sliced by the knife , lol .