Ayatsuno Yuni Hanbok alternative costume

Hi there, I need help with the tag for this Hanbok alternative costume of Vtuber Ayatsuno Yuni from Stellive.

ayatsuno_yuni_(2nd_costume)

So far I couldn't find any official art for Ayatsuno Yuni hanbok costume along with the artist who design the alt costume and thus I can't be sure if her alternative costume is 2nd one or 3rd one or something else.

Therefore, I would keep the tag empty until I could proceed further with enough info since it was hard to define it.

There are 17 arts that is her same hanbok alternative costume so I would appreciate your help for defining the correct tag for her.

https://danbooru.donmai.us/posts?tags=ayatsuno_yuni+korean_clothes+&z=5

Are there no fan wikis you can check to corroborate whether or not it's her 2nd or 3rd costume? Or check her streams/archives or socials yourself?

I did check namu and virtualyoutuber.fandom.com but can't find any clue. I checked her Twitter earlier but ran into a similar problem.

So far I'm kinda stuck on that after a while checking.

In cases like that the only thing you can really do at that point is just manually check the stream archives, if she has any, so you can find when she debuted the model for her Hanbok at minimum and at maximum if there was anything before it and anything after it and before her 2025 summer costume.

Okay thanks I will try.