We were planetform-aligned some time ago, in the times before KNF even thought of existing. I still remember raiding Kusari from Leeds to New Tokyo, blasting any Kusari NPC I saw in my sights. Pretty recently we've asked the fighting KNF and SF to fly farther away from Holman. That battleship salvo damaged the base too badly already.
The KU-BR war simply has to end some day. Or.... let it resemble the 100-years' war between England and France? Matter of time. Currently Bretonia is losing, but its industry and minerals give them a nice edge in reinforcements. They can easily replace the ships they lose. Kusari on the other hand lack resources, required to build new ships at a rate like Bretonia. They have to rely on GMG supplying the fuel and possibly IMG suppliying more solid minerals. KU however have a considerable superiority over Bretonia in terms of technology.
Even now it's still hard to predict, who will ultimately win. Maybe the two remaining houses could get mixed in too? Liberty is closer to Bretonia, while Rheinland surely will support IMG = KNF.