Cindered Shadows save data is separate from the main game in Fire Emblem: Three Houses

Nintendo has confirmed that the save data for Cindered Shadows in the Fire Emblem: Three Houses Expansion Pass Wave 4 DLC is separate from the main game. However, progress in the side story will influence what you can do in the main game, including exploring Abyss. By continuing to progress in Cindered Shadows, players can interact with and recruit the four Ashen Wolves in Part 1 of the main game. Once they’ve joined your house, they’ll be available to participate in battles and classes. You can check out some new screenshots showcasing Cindered Shadows in the gallery below:

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