Looking at the Japanese script, I saw that there are 5 different death epilogues you get in the ending:
Defeated Epilogue A
Disappeared in Chapter #: (Chapter title)
Defeated Epilogue B
Slain in Chapter #: (Chapter title)
Defeated Epilogue C
Defeated by ? in Chapter #: (Chapter title)
Defeated Epilogue D
Succumbed to poison in Chapter #: (Chapter title)
Defeated Epilogue E
Slain by own Devil Axe in Chapter #: (Chapter title)
However, I've only managed to get Epilogue B (regular epilogue when you get killed). I had a character die by posion, and others get killed by the last boss in hopes of getting Epilogue C and D, but I still get the regular death epilogue.
So, does anyone know if you do get other epilogues or if they are unused?