NOBLE REINCARNATION: BORN BLESSED, SO I'LL OBTAIN ULTIMATE POWER

Noah, the world’s strongest six-year-old, has been privileged enough to be reborn as the emperor’s 13th child. What’s more, he’s been overpowered with an infinite level cap and a cheat that stacks the powers of anyone who serves him. But even privilege has its problems—the glittering facade of high society hides a world of conspiracies, schemes, and power struggles. (Source: Crunchyroll) — Description from AniList community (anilist.co).