The Hated Illegitimate Son? No, the Empire's Little Prince

【Transmigration + Rebirth + Interstellar + Bittersweet Healing + No Romance at First + Two Male Leads】 Lan You transmigrated into the interstellar angst novel his mother had written. The story took place one year after the ending, and he became the illegitimate child of the female lead’s younger brother, who had been banished from the Imperial Capital. He thought he’d soon graduate, leave home, and support himself. But when his second older brother was promoted in the military, the whole family moved back to the Imperial Capital, and as a relative, Lan You was required to train at military school. But he was a weakling with a frail body and a disorder that caused his mental energy to run wild! Then, during a military school competition, an enemy invasion occurred, and he unexpectedly resonated mentally with the novel’s male lead, now the Emperor of the Empire. In the interstellar world, only partners with extremely compatible mental energy or relatives who shared pure blood could resonate mentally. In one fell swoop, he became the long-dead son of the novel’s male and female leads, as well as the descendant of a rebel whom the male lead had once been supposed to order killed with his own hands. Yue Zhan Langruigete, a ruthless emperor who had expanded the Langruigete Empire many times over through bloodshed, held supreme power. He had personally killed his queen, the novel’s female lead, and hadn’t even spared their newborn son. During the rebellion at the story’s climax, he advanced to the legendary 4S level, said to grant near-immortality, but as a result, he could no longer have descendants. The only prince? Then who was this older brother who had suddenly appeared?! The people of the Empire discovered that their little prince had it rough. In every photo, he looked deathly pale, and he was often injured or unconscious, while the cold-blooded emperor was always there, gently caring for him. Lan You looked at the “perfectly normal” photos trending across the Empire: I’m actually doing pretty well... (A slice-of-life story, a little silly, not pure fluff and does have angst. Don’t read if that’s not your thing~)