Thank you for the help! I actually did just that, I played through another game (after the Golgatha ending) as an Iscari with Heath as my mentor looking for the red choices the entire time, and never found any. Do you happen to know where those should start- is it RIGHT after choosing your mentor? I'm worried about playing through ANOTHER game without ever finding those buggers. c':
Provided you play as an Iscari and unlocked the fourth ending, then the red choices should show up right after you picked Heath as your mentor and then visit him at the bar. To be specific, the first red choice I got was this:
Heath: Why did you came to Hollywood in the first place?
MC (underlined red): I dreamed of being a star... and I knew this was where I belong.
So you were able to get your choices to become red? That’s great!
Mine is unlocked as well, but I do not see red choices. Maybe I need to side with Saorise instead of Randal on Heath’s route this time around...
Edit:
That was exactly what I had to do. I ended up going back and getting that other ending. Now it shows up :)