Don't Expose This King's Secret Identity

[Two male leads] [Receptor's perspective] [Emperor Alpha x Regent Prince Omega] [One-on-one] As The Outcast, the regent prince Bai Yewu seems to have a life of effortless splendor. Behind the scenes, though, he's just a hardworking employee tasked with protecting the chosen one of destiny. In his short life, he uses two secret identities, saves a prince from the Western Regions and a general serving the imperial court, and eventually enters officialdom to raise the young emperor. The moment His Majesty takes power, Bai Yewu fakes his death and goes on vacation. But less than a day after his “death,” the System drags him back. System: “Host, the weather's turned cold, the plot's gone off the rails, and it's time for you to come back.” Bai Yewu: “???” The mission world is collapsing, the timeline is in disarray, and the chosen ones of destiny who retain their memories have all come looking for him. The blue-eyed, black-haired prince from the Western Regions speaks fluent court Mandarin. “By the customs of your Central Plains, since Your Highness saved my life, I should offer myself to you.” Bai Yewu: “It's a misunderstanding, a misunderstanding.” The earnest general, who went to war as a teenager and knows nothing about how to court someone, is afraid of offending his beloved. “Your Highness, do you need a guard at your residence?” Bai Yewu: “It's a misunderstanding, a misunderstanding.” The young emperor, teetering on the brink of turning evil, asks, “Royal Father, why did you save them but not me?” Bai Yewu: “...It's a misunderstanding, all a misunderstanding. First, put down those shackles!”