Sorry but, wich relation there is between Link and Marth? Why they ever argue????

there is none in the legend of zelda games i playd BRALW and there is no conetion there as well so...

There is no relation between them, since they re from different games (Link from LoZ and Marth from 火災, 火 Emblem). Not even in Subspace Emissary of Super Smash Bros Brawl they get directly together. The only thing is that both are in the good side :)

there is no relationship

I have no idea.....(gets attacked によって RedLink) AHHHH!