This set includes the following DLC:
- Eastern Hats Set A/B/C
- Ear Accessory Set A/B/C
- Earrings Set A/B/C
- Ambiance Set A/B/C
- Fruithead Set A/B/C
- Nobori Set A/B/C
- Shameless Nobori Set A/B/C
- Swin's Swimsuit
- Nadia's Swimsuit
- C's Simply C Swimsuit
- Lapis' Swimsuit
- Floaty Friend Set A/B/C
- Vintage Glasses Set A/B/C
- Stylish Glasses Set A/B/C
- Cute Head-Topper Set A/B/C
- Mask Set A/B/C
- Carry 'Round Set 1 A/B/C
- Carry 'Round Set 2 A/B/C
- ARCUS Faceplates Set 1
- ARCUS Faceplates Set 2
- ARCUS Faceplates Set 3
- Assertive Panels Set A/B/C

*These items can be claimed from the DLC tab on the Item page. After obtaining the items, they can be equipped from the Costume page on the Camp Menu.

More details on the official game page of Trails into Reverie: Premium Cosmetic Set ...