(copying my comment from the itch.io page to see if anyone can help me)
Hey uh, am I softlocked? Or what do I do now?
My save point is at the blue crystal outside of Apartments / Building 113. I'm seeing a video where a boss spawns in the room below the Sanzu Blade, but it's not spawning, even though I have the blade. I have no clue what makes it spawn. Apartments is blocked by the blocks with faces, so it seems like I can't go back there. If going back through the path I took for the Sanzu Blade is what I need to do to progress, I can't do that either since it's blocked by blocks that I don't think I can break without Eclipse - and I'm out of them, and don't know where to get more. I vaguely remember those invisible gray enemies dropping them, but I'm killing the ones in Mist City and they're not dropping any. I tried using Aurora if that matters, and it did nothing. How do I progress? How do I make the boss spawn?
I think I might've spawned the dark blocks with faces AFTER getting the Sanzu Blade. Does that make it impossible to spawn the boss?
(Anyone reading this, if I am softlocked, or if you just don't know if I am, if you have a save file for hard mode Sasha that is SOMEWHAT near that point of progression, I would appreciate if you sent it so I can beat it without having to do EVERYTHING all over again)
EDIT (SOLVED): The creator of the game helped me find a solution, it was quite simple. I used Aurora in that small part of Apartments, waited a little bit, then shot a fireball to roughly my top right, and it hit Mizuki, causing her to start chasing me. From there you can defeat her however you want but I made her chase me into the hand enemies in a previous area.