Blue the magic user has been tasked with the sad task of tracking down and killing his twin brother, Rouge. Along the way he comes to terms with some uncomfortable truths and gains a variety of powerful spells. Eventually he confronts Rouge and ... loses? Thereafter, things get very weird and eventually all is revealed to be... well, vastly complicated.
In this run, only the bare essentials are carried out, and many of the required battles are performed in an incredibly short span of time.
Also check out the run starring Lute, another main quest in the game.