Why is it always the white haired guy who is left alone after witnessing his dark haired best friend/lover/rival's descent into darkness. The dark haired guy always dies in the end too. He's the one who wasn't born talented and gained his powers through so much effort, an external help (and descent into darkness); meanwhile the white haired guy is the strongest and most talented, also the one with no moral code, because of his too great powers, so he relies on dark haired guy to direct his morals.