This mod allows to acquire the following costumes which are usually available on a NG+ run of the game on a NG run.
The costumes made available with this mod include:
Van Sans Coat
Van's Towel
Van's Samue Attire
Agnès Sans Coat
Agnès' Towel
Agnès' School Uniform
Agnès Sans Shoes
Agnès' Samue Attire
Feri's Hood
Feri's Towel
Feri's Lightweight Outfit
Feri's Samue Attire
Aaron's Towel
Aaron's Lightweight Outfit
Aaron's Samue Attire
Risette's Towel
Risette's Loungewear
Risette's Samue Attire
Quatre Sans Coat
Quatre's Towel
Quatre's Samue Attire
Judith's Poolside Swimwear
Judith's Towel
Judith's White Robe
Judith's 'Disguise'
Judith's Samue Attire
Bergard Sans Coat
Bergard's Towel
Download the NG+_Outfit_Mod.p3a file.
After that, navigate to the folder where you have installed Trails through Daybreak. In that location, create a new folder named a 'mods' if you haven't done it before. Just drop the NG+_Outfit_Mod.p3a file in it and you're done.
Boot up the game and you should be able to buy these outfits in the Montmart shop that Paulette usually has.
In the case you are using different mods and are not sure if there could be some conflict with this mod, you can make use fo eArmada's Kuro DLC tool to fuse them together. In that case, you'll need the kurodlc.json file instead of the .p3a file.
In case you have more questions regarding the tool, you can join the Kiseki Modding Server and ask about it there.
Short Answer: It's a meta joke
Long Answer: In the 5th chapter of the Agnes's style spin off manga, Yumé gets Agnès to try on various outfits that belong to Paulette, and the Golden Blood Suit is one of them. So, I decided to place the costumes there as a meta joke of Paulette somehow getting them for you.