I just finished reading through the Lingering Echoes story : r/arknights
Arknights Lingering Echoes Cry About It - Discover & Share GIFs
Lingering Echoes synopsis | Arknights Wiki | Fandom
Arknights Animation PV - Lingering Echoes | December, Arknights | Arknights Animation PV - Lingering Echoes "I promise you this. I will grant you a smile." New Side Story Event: Lingering Echoes
Arknights Lore: Classical music references in Lingering Echoes | Arknights Wiki - GamePress
Arknights Lingering Echoes Event Begins on December 27 - QooApp News
Lingering Echoes official artwork : r/arknights
Arknights Lingering Echoes: New Operators, Campaign, Skins