The Wrongly Swapped Young Master Is a War God (Interstellar)

Qin Jian was switched at birth as a child, and thought a warm family was waiting for him. But... His father saw his mental power and told everyone that Qin Jian was the one they had found and taken in. His mother forbade him from using his younger brother's things or taking anything his brother had his eye on. His older brothers only ever remembered Qin Zhou, their fake younger brother. With a mental power level of zero, Qin Jian was mocked and bullied by everyone, constantly compared to the fake. Even the person he loved only saved the fake young master during a mission, leaving him to die alone on an unfamiliar planet. He died a miserable death. At the same time, the corpse of the most revered member of the illustrious Qin family, the once-gifted boy, the youngest God of War, and the Empire's cherished icon, suddenly came back to life. The Qin family: "!!!" Only then did Qin Jian remember that he was actually Cen Jian, and had never been a young master of the Qin family at all. And so he began a happy life at military academy. After Qin Jian died, the Qin family couldn't have cared less. Cheng Yiming, who loved Qin Jian deeply but had left him behind, lived every day consumed by regret and longing, until they saw "Qin Jian" again at the Empire's finest military academy... A regretful ex who can never win him back, and a new love interest. Little skit Question: "What's it like having your grandpa in the same class?" The Cen family's genius youngsters: "Hmph." "Hello, Grandpa." Question: "How does it feel when your former student becomes your instructor?" Cen Jian fretted: "How am I supposed to avoid him?" Coming soon: The Young Master of a Wealthy Family Awakens After being reborn, Qin Yan discovers that he is a cannon-fodder male supporting character in a novel. The protagonist, a poor young man, wins the heart of Qin Yan's fiance with his self-reliance and indomitable spirit. Because Qin Yan loves his fiance too much, he gets jealous of the protagonist and repeatedly sabotages him and schemes against him, until his fiance utterly despises him. Qin Yan then falls into a filthy pond and drowns. Qin Yan asks the person behind him, "Lin Chao, what would you say I enjoy doing?" The man behind him answers respectfully, "Spending money." Qin Yan smiles with satisfaction. So... Is spending money not fun? Or is spending money not enjoyable? What do I care about protagonists? I, Qin "Niu Gulu" Yan, am obviously going to... Make that nasty couple's lives a living hell! And so Qin Yan, the cannon-fodder who used to secretly plot against the protagonist, starts openly making his life miserable. Wherever it hurts, Qin Yan pours salt on the wound, determined to follow the cannon-fodder route. Lin Chao, his bodyguard, watches his willful young master and sighs in exasperation. He adjusts his cuff links, walks out the door, and fixes a cold gaze on the person his young master wants to destroy. From then on, wherever Qin Yan points, Lin Chao strikes. The protagonist's crew trembles at the mere mention of them. Later, the protagonist finally can't take it anymore and comes to confront him. "If you stop, I'll marry you." Then he sees... Niu Gulu Qin Yan nestled in Lin Chao's arms, obediently eating grapes. ??? Something doesn't feel right. A sweet, adorably awkward young master X a bodyguard in name, a real big shot in truth Theme: Even when surrounded by darkness, keep reaching for the light