Okay.....just a word of warning the hint for bad ending at the Golden Temple is mistranslated I feel so here's a different hint that comes to mind.....what brings you closer to your enemy allowing sight, goes both ways in more than one way.
Additionally at the boss battle there glitched out for me as getting caught and something else caused me to need to go back to title as Hachina vanished completely and the camera didn't know what to do. So beware getting caught there a second time while trying to struggle out as I suspect that caused my glitch.
EDIT: My save data, I went for a virgin run just aiming to complete the game (gallery unlocked as a result I expect) so no development should be present and the only status effect is Hypnosis as I can't figure out how to get rid of it right now:
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I did notice that as it's a json file you can open it up in notepad++ and change it through that and your own. I did test and it seems like the savecore file in the game's folders makes the save list reflect the existing saves so I suggest you rename it to savedata1 so you can open it up and then resave it to your preferred slot as a result it then looks better.