There's a speedrunner on twitch.tv named Jiseed who's using an apparent recently discovered debug function in Breath of Fire, leading to a branch name he calls "DeeJ%"
Jiseed's DeeJ% speedrun:
http://www.twitch.tv/jiseed/c/3966113 (I have no idea how to embed a twitch channel)
(From his channel FAQ)
Q: What is "DeeJ%"? How do you perform the name select 'glitch'?
A: DeeJ% is using a suspected debug function found in the name select in order to skip past much of the game and only battle the final 5 bosses. As for how to do it - this courtesy of Myria from the Dragon Tear forums:
1) Go to New Game to get to the name entry screen. Be very careful with the next few steps - don't press anything I don't say, or the cheat will lock out.
2) On controller 2, press and hold A, Y, L, and R. Doing this with one hand really sucks.
3) On controller 1, while those buttons on controller 2 are being held, press the following very carefully in order: up 4 times, right 2 times, down 8 times, left 1 time.
4) If you did it correctly, the background will turn red. At this point, you can let go of controller 2. If the screen didn't turn red, you are locked out of the cheat. To reset the lockout, cancel the name entry screen and try again to reset the lockout.
5) Enter one of these as the name of your character and hit End. You can't make mistakes, or it'll lock you out; the screen will change back to normal if this happens. The names are case-sensitive.
RYU
CHUN
VEGA
KEN
DeeJ
Fei
The screen color will turn back to normal as the config window comes up. Set your config how you like and start the game on the new file.
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Due to being a code, this likely wouldn't be an accepted run. Anyhow, it's pretty cool how this game can now be beaten in under an hour.