Facial animations broken on some (maybe all) characters

[Cleep2]

Describe the bug Some facial animations (EM[CHARACTER_ID].GFS) seems to badly load for some models

Environment Blender 3.6 Plugin version: 0.2.1 (also tested the latest dev) Reproduced on P5R PC, P5R PS4 and P5 PS3 files.

To Reproduce Steps to reproduce the behavior:

• Load any model for the character 0010 (Kasumi), For example C0010_01_00.GMD
• Load the facial animations for the model. For example EMT0010.GFS
• Activate the EMT0010 in the animation packs
• Load the animation 01
• This is what you see

I also tried that with Maruki (1014), Joker (0001) and they also have the 01 (and many other) broken. But Ryuji (0002) seems to not be broken (or less broken)

Notes:

• I also tested on original P5 (not royal) files and the same behavior happens.
• Not all the facial animations seems broken.
• I tried a lot of import parameters combination but none fixed the issue

Expected behavior The facial animations works properly, for example Ryuji seems to work better

Files Character models:

• C0010_001_00.GMD
• C0001_001_00.GMD
• C1014_001_00.GMD

Animation:

• EMT0010.GFS
• EMT0001.GFS
• EMT1014.GFS

Additional context I think there might be an issue with the rotation of the bones, because when I tried to investigate I noticed that if I "swap" x and y rotation it "looks" closer to what I would expect for the "closed eyes". But I have close to no knowledge on quaternions so it might just be some coincidence.

[Pherakki]

Thanks for the report and sorry for taking a long time to react to this. I'm pretty sure I know what the ultimate cause of this is... your note about a 90 degree rotation seeming to fix it basically confirms the thought... but I'm a bit worried that fixing this might be quite non-trivial. I've done a preliminary investigation already but will need to dedicate some more time here to figure out why these bones seem to break the rules.