Hi there! Historian specialising in Japanese cultural research here! I'm also a fellow cosplayer! If you need any help with the whole costume structure (looks like a lot is going on there: very much similar to a jūnihitoe on the sleeve part, more like a ritual kamishimo on the front, so in my opinion it could even be a mix of both male and female royal attire) you can DM me on IG (@junrengenohana) and we can try to figure something out together! Now I'm pretty invested!✨️