Well, here's something I wasn't expecting. I played a casual credit of DFK BL with B-Power -- pretty much my best run ever in terms of survival (only one death in ST4, no-missed the ST5 boss), one death on Golden Disaster, so I finish with three spare lives. Yay, finally got the 1CC with a decent score. Or so I thought! Before I know it, out pops Hibachi!
1,362,655,619,612

I didn't know what the heck I was doing, I've never even practiced Hibachi in training mode. Got about half its life down before the big Game Over.
I thought if you died more than once before the end of the GD fight you wouldn't get Hibachi, but this shows if you only die once (or no miss) up to GD, you still get Hibachi even if you die on GD.
Since I did 1CC the game past Golden Disaster, this beats my old 1CC score from 2011:
947,690,917,215 - ALL - B-Power - Autobomb OFF - X360 (HIGHEST 1CC SCORE) {4.16.2011}