We all know that Guld Bowman was a halfbreed, meaning one of his parents was a Zentraedi while the other was human. Though there shouldn't have been any problems with this (look at Max and Miria and all 7 of their kids!) there was something wrong with Guld's physiology. A bad temper and sometimes berserker mindset often plagued him, forcing him to consume drugs to keep him in check. (Remember the shakes he had?) We know all this from the doctor's report which Miller requested.

So Guld was a little unstable to say the least. Anyways Guld, Isamu and Myung were friends since they were little and practically grew up together. So what tore them apart? Well, from their conversations you can tell that Guld and Isamu always had a competitive streak going on when it came to flying, but I think Guld's psychological problems started to manifest as he got older.

During their many flashbacks in the story, something happened to Myung and both men seemed to blame the other. In fact, as Guld finds out in the climax of his battle with Isamu, Myung was attacked and (probably) nearly raped - by himself (he sees his own reflection in the mirror). Isamu was knocked down by Guld but managed to recover as soon as Guld snapped out and realized what he was doing. Because of the immense regret and guilt of what happened, Guld repressed his memories unconciously only being able to remember the image of a distraught Myung, and Isamu holding her. Because he couldn't remember what happened before, he probably only had bits and pieces and just assumed Isamu was the reason for her distress.

When it became clear that he couldn't remember what happened, Isamu and Myung decided not to reveal the truth to Guld. As a result, Isamu and Guld's friendship fell apart. Both men drifted apart and eventually began to drift away from Myung as well. Afterwards, Myung left Eden for Earth. Isamu joined UN Spacy as a fighter pilot and Guld remained on Eden.

When Guld regains his lost memories he is ashamed, but Isamu tells him "that time during the festival.....I was the one who trashed your plane....[later]....let's just forget everything that happened after that.......I'm sorry....". Isamu apologizes first, leaving the way open for a reconcilliation between the two.

The new Valkyrie model is tested and sent into combat. They show the transformation sequence and how the pilot tracks all those rockets with his eye and a computer tracking sensor to coordinate an attack for nullifying them. Then they get into the whole swerving in midair fight scene showing him shooting defensive homing rockets and blasting away with his rifle. OVERLY DRAMATIC, but cool still.