Remnants

- What is this place? -
Remnants are in-game pieces of stained-glass art depicting a character or characters. They can be earned throughout the main story of Season 3 or purchased using Mama Exchange Points. Upon receiving one, it grants a permanent stat increase.
The ones earned via the main story have a respective story blurb attached. If you would like to read these, you can see the IMGUR gallery I made here.
If you would like to read the main story remnant blurbs and also see the rest, you can do that on ReIn Guide. A video in Japanese is here.