They are barely presented, each one had only one chapter and haven’t been talked again up to chapter 50
By chapter 77 the Heroes turn out quite bad, one has the makings of a hero but the other turns into a pathetic sob who runs away at the first sight of not being on top and is being used.
A possible love interest is actually in love and has a quite stable relationship with someone else
Later on the touch of blatant racism against Japan and Japanese people is brought up, author shows a clear position in hating them, people should either don't read this novel or take it with a grain of salt as the situation taking the worst out of people and simply ignoring it for the rest of the story
Sadly some developments took a weird turn around chapter 90 when the MC 'adopts' a crappy group of Monster Hunters, they die and MC goes all broody, which in turn makes him clash with a local Power's main son, then the MC goes in a kill spree, he even taunts people to come and catch/kill him so he can kill them and/or steal their possessions.
This is later on explained as a big part of the story
both are pretty funny and quite the pair of perverts, love to fight with each other at any little grievance too, they usually speak with the MC through dreams and in his mind, but it never happens in an instant and the MC ends looking into the distance (or chests) meanwhile.
It's explained that his weakness is mostly from not being trained since young, so he can't use magic without the massive force in his body making all spells go berserk, luckily for him, the two dragons appear to have a way to fix it (or so they say)