No. 1 is Restless is a downloadable content of Valkyria Chronicles 3. The DLC contains a mission called Cold War. It was released on February 24, 2011 and can be purchased for 600Yen from the Playstation Store. In the Valkyria Chronicles 3 Extra Edition, it is among the several downloadable contents already included with the game. Unlocked after completing chapter 13.

Nameless was set to fight in Gallia's mining region and selected a perpetually snow-covered mountain as the setting for their battle. Imca has particularly low resistance to the cold and tried to figure out a way to fend off the chill during the night, but the squad did not have any extra blankets. Concerned with Imca's comfort, Kurt offered to let her use his blanket, but she refused to leave him vulnerable to the cold. With few options left, Kurt suggested that they share the blanket, and though Imca was a bit embarrassed at first, she eventually agreed. Imca got a good night's rest and even asked Kurt if they could sleep under the same circumstances again the next night. Unfortunately for Imca, Riela discovered the two sharing their sleeping quarters and interrogated Imca about it to no end.