Two males with females nearby?

So I've fallen in love with my little Ash (a kit from my Blossom's litter that I thought was going to die) and so has my mom. If I kept him, that would mean that I have two males, and two females. I would have a stacked/divided cage, and probably separate the males and the females. But would the two males still fight if the females were that close when they went into heat?



Thanks!