See, I didnt read it liek that. i can buy everythign up to after Guld blacked out. But then i think Isamu and myune left because they had agreed never to let him know whjat had happened, because he meant so much to them. When the three of them meet up on Star Hill, and meyune steps between them, she gives this pleading look to Isamu, which to bme always seemed to be a plea from her along the lines of "Isamu, Don't do this, you know what it will do to him." then we see Isamu with a look of "Oh RIGHT, we cant fight coz he'll go crazy..." look on his face. i think in Gulds mind Isamu left out of shame for what he did to Myune, and Myune just wanted to be away from where it had happend.
back to Froniter (which is as good a name as any for now), I have faith that we'll have a good setries. I personally enjoyed Mac ), and while 7 is a bit annoying in its length if nothing else, it doesnt bother me as much as it does others. So i have hope