I can't get any of the armor scenes on my 2nd playthrough (NG+) for some reason. I am currently on chapter 4 and i maxed all my armor in the first playthrough already. I have tried equipping each armor then leaving my workshop and city then coming back and still does not work, I have some of the maps for the armor scenes so far so I have only checked those. Nothing worked, and not even my fully enhanced gothic armor. I did equip it on all 3 heroines leave then come back. Nothing worked T_T. I am currently on emelita's route and checked for her armor scenes and they did not work. My first playthrough was yuela and i got her armor scenes right after i finished enhancing her armor, but i can't enhance emilia's armor this route since they are already maxed.

You must get first scene with the route heroine before any others. So wait until then.