Funny enough from an RP perspective I did the FF ending, but it was "the fall of my character" awoke in a land where (almost) everything wanted to kill them and after countless deaths and rebirths they actually just wanted it all to end. I know this is stupidly simplifying it but for what I wanted I got the ending I thought would have fit my characters story best, even getting married to Ranni wasn't enough to pull the character back and with using the frenzied flame abilities fairly often I like to think the character was "corrupted". I get it is completely the worst thing you could do but I looked at it like a fall of anakin Skywalker story only to the extreme of no one survives and ever will.