Arknights: Funnan's Savage Crusade

Super Funan, a loyal BVVD user, and three handsome guys named Yujin, Maksim, and Oleg used to be ordinary office drones. Not long ago, they answered the nation's call and went to the Eastern Ukraine front to serve in the military. The three, who were passionate about tanks, got their wish and joined the 102nd Armored Brigade as the crew of a T-90M. But disaster struck: during an operation, they took cover from artillery fire and accidentally became completely separated from the main force. Just as they were at a loss, the weather around them abruptly changed. A raging blizzard forced them to seek shelter. But when the storm finally passed, they discovered that everything around them seemed to have quietly changed. With nowhere else to go, they began a perilous and challenging journey across this strange continent called Terra, where steel legions roamed everywhere.