I'm a Spy, Why Do You Call Me Comrade?

Twenty-year-old Xu Jingyuan thought infiltrating enemy lines would be straightforward—until a bizarre system dubbed him an 'Old Man' and started assigning impossible missions. Fresh from transmigrating into this world, he's supposed to be a covert operative, yet everyone keeps calling him 'comrade' like he's one of them. Caught between maintaining his cover and completing absurd system tasks, Xu Jingyuan must navigate a world where nothing is as it seems, and one wrong move could blow his identity sky-high.