Considering fire a counter, they may also have water-related powers, but since nobody so far has presented anything similar, i’m thinking someone’s gonna get a cool power reveal.
fire AND light both have to counter the child
light doesn't counter water in any way
fire emits light which is why it counters darkness
How does darkness counter fire? Turn off the lights in a burning room and the rooms still burning
fire counters darkness
they say that the reason the monsters are light/fire element is to put the child in danger enough for them to awaken their power at a life or death situation
so the child of destiny's weakness is fire and light
MC's power is to see in the dark (and possibly cause his surroundings to become dark)
hMmMMmmmmmmMmmMmm