Date & Time: Jan 8th 2023 Any time, EST
Frequency: Always
World name: Aether
Character name: Kinara Primerain@Adamantoise
Retainer name: None
NPC name: None
Monster name: None
Class/Level: 90 Reaper
Party or solo: Solo
Race: Female Viera
In-game time: Anytime
Area and coordinates: anywhere
Housing: None
Steps:
1. Wear/glam the Heavensturn Domaru
2. Dye it pure white(color doesn't matter but it make it more easy to see)
3. Walk slowly(doesn't seem to happen when running) with back facing camera

https://m.youtube.com/watch?v=23_ua9fZSjo

In the video, the top flap looking part on the back clips into the body around the suspenders looking X thing. Both left and right side.

On PS5 but don't know any other info.