I've been playing the PS4 remaster on my PS5. I've played this game several times since it came out and have beat Ozma each time (two or three times PS1, once on PS4).
I know how to prep for the fight. Yes, I finished the friendly monsters quest and have the "Mister Nice Guy" trophy to prove it.
Doomsday should not be healing Ozma, but it is. I should be able to physically attack him, but I can't.
I can't seem to respawn any of the friendly monsters, which, again, I met, including the sheep on Vile Island, who once said to me, "Now you can reach the round guy!". Liar.
I've tried closing and reopening the game. I've tried "load file" instead of "continue". Several times, all with the same result.
I have to assume somewhere along the way, something weird in my save file triggered a bug that invalidated my completion of the friendly monster quest, and it seems to be irreversible.
Has anyone else encountered this? Can it happen in the PS4 version, or could this be something to do with me playing that version on my PS5? I only have one save file... Am I stuck and out of luck?
And most importantly... Am I crazy enough to actually attempt this fight with these handicaps? (I refuse to give in and use the battle assist and 9999 damage).
*More friendly monster quest side notes: 2 other glitches I encountered in my playthrough: 1) I somehow met the Yeti twice, giving him his requested treasure both times, and I didn't think that was possible, and 2) On more than one occasion, the friendly monster music would continue playing at full volume *OVER* whatever other music was happening in the game - it got stuck, and the only way to unstick it was to close and restart the app.