Becoming an Imperial Major General [Interstellar]

The young major general has extraordinary mental strength and is both handsome and accomplished. Having earned countless military honors on the battlefield, he is highly valued by the Empire's marshal. After transmigrating into a book, Luo Wen has no interest in getting caught up in the royal family's power struggles. He just wants to stay out of trouble, be a lazy homebody, raise a cat, cook delicious food, improve the cuisine of the entire interstellar world, wipe out the Zerg, and live a comfortable life. The marshal gives him a fluffy, adorable pet. He eats and sleeps with the little cat in his arms, but then something unexpected happens. One day, he wakes up to find his cat gone! Not only that, a beautiful young man has crawled out of his bed. Luo Wen looks him up and down. Could this be the future's number-one assassin, the legendary K? The future assassin, Jialun (not really), was thrown into an Imperial laboratory as a test subject. When he woke up, he had become a cat-eared boy. He was devastated. But what devastated him even more was inexplicably turning into a tiny, short-legged, fluffy white kitten, then being given away to an owner who seemed proper on the surface but was a pervert in private. The man held him, petted him, kissed him, and stroked him every day… Jialun wasn't one to hold back. He gave him a few sharp scratches every day. Later, he discovered he could freely switch between his human and beast forms. On top of that, he awakened S-class mental powers while sick with a high fever. After that, he enrolled in military school, joined the army, and fought the Zerg. Though he was violent and cruel by nature, Luo Wen gradually trained him into a docile, well-behaved boy. He even learned to cook from Luo Wen and made delicious takeout for his classmates every day. Luo Wen: Boo hoo, he's so well-behaved and considerate. But later, Luo Wen watched the boy tear his classmates apart at school, crush mutated Zerg with his bare hands when attacked outside, fire a gun at random and hit every target without even looking, and effortlessly pilot a gravity-propelled aircraft. He was left deeply confused. What the hell do I mean when I call him well-behaved and considerate??? CP: A seemingly aloof but secretly flirtatious, shamelessly persuasive, extreme fluff enthusiast uke x a genius mech warrior seme, violent at first but tamed by his lover later, with top-tier cooking skills ++++ Age gap, with the seme younger than the uke!!! Notes: 1. An interstellar slice-of-life story with mutual pampering, focused on romance. The plot is half farming, half food, and half political intrigue. Not an ABO setting. 2. The seme grows stronger over time. He's weaker than the uke at first, but becomes stronger later. 3. The seme changes his appearance early on, for a reason. 4. The protagonist has a System, but it doesn't play a major role. 5. Please follow the story (*/ω\*) Thanks, my lovely readers~ Premise: No matter what era you live in, always strive to grow stronger!