Pokemon: The Rich Second-Generation’s Journey Begins by Beating Eternatus

[System + Rich Second Generation + Invincible + Dragon Clan + Both Parents Are Kings + No Human Female Lead] After transmigrating to Blue Star, he stumbles upon Arceus, Eternatus, and the Blinding One, three powerful beings on the verge of battle. Is his transmigration over before it even begins? No way! With the System at his side, he gets the strongest Mewtwo from the start and beats Eternatus to a pulp! He is then reborn into the Long family of the Celestial Dragon Kingdom, the strongest family around, as its good-for-nothing young master. He’d planned to coast through life, but now he has no choice but to work hard to stop the two powerful beings from carrying out their plan to devour Arceus. Years later, when the leader of a dark organization, convinced he has brought the Blinding One, Eternatus, and countless Legendary Pokémon under his control, sounds the Azure Flute, he has no idea that Long Yu has been waiting in the Hall of Origin all along. [If Pokémon count as female leads, then this is not a single-female-lead story.] This is only half an invincible-protagonist story. Since the protagonist faces the final boss right from the start, his invincibility isn’t all that obvious. So he still grows stronger as a Trainer and learns to master the powers known only to Trainers.