I recall the worldbuilding for the WNs being rather basic.
There are only 3 areas of note in the story. The human country, which is run by a guild (no kings, ministers, etc). The demon country, which is run by the demon king. And finally Rax village and its surrounding territory, where the majority of the story takes place.
I feel like this would be a great time to mention that the mithril forge is only active because the village currently has an agreement with the Demon’s country.
hmm, so archer guy will be the 4th member then? I want to see the hero face when on their way to defeat demon king he tells a story about how strong his aniki is and his aniki more OP wifey.
i'm guessing she's gonna use some OP power and MC is going to have to jump in to save the little bro. afterwards he's gonna refuse but they're either gonna blackmail/threaten him or he's going to get peer pressured by everyone in the town to join them.