You Never Said My Secret Identity Would Cause a Love Rival Showdown

[Main Story: No CP; Extras: CP] [Doppelganger Elements + Secret Identities + Wild Speculation] (Skip the awkward scenes in the first two chapters if you like) Cassian had been a prince of the continent of Ciprian for twenty years. At long last, he escaped to the borderlands, where he no longer had to endure the bloody intrigues of the imperial capital. But when his second brother gave the order, he had no choice but to return and get caught up in the mess. What was this System? And what were these missions? Why was he supposed to take on secret identities to save the protagonist? Wait, what even is all this? By Silas, please don't let them burn me as a heretic before I even reach the imperial capital tomorrow. (´இωஇ`) But as Cassian gradually got used to dealing with this mysterious System, he began to realize that, besides being dragged into the original novel's plot, he had also fallen into an even larger conspiracy. The secret identity [Devotee] cares only about money and turns a deaf ear to everything else. As a result, whenever he is retrieved, people always assume he has been destroyed. Willy: There must be a ruthless backer behind the Third Prince. It looks like the imperial capital is about to undergo a change. A black-haired, black-eyed "elf" followed the original protagonist like a ghost, helping him uncover the truth behind his teacher's death. Kurt: You... don't have to push yourself so hard. Is it because of that friend of yours, the one still in the royal family and fighting for his life? (He discreetly takes his hand.) At first, everything that happened under his secret identities had nothing to do with Cassian, until one late night he saw a figure that made his heart skip a beat inside a crystal coffin in the temple. A black-haired young man lay within, eyes closed as if asleep. System: Host... this is what you looked like before you transmigrated. Cassian: !!! After that, rumors began circulating in the imperial capital that the Third Prince had a peculiar "fondness" for soulless bodies. Cassian: ...I'm tired. Let it all burn.