HxH: Starting with a Contract, Gon goes to One Piece

Original Author Synopsis: In his third transmigration, Kael arrived in the Hunter x Hunter world, a world even more bizarre and dangerous than One Piece and Naruto. His previous two transmigrations, marked by the painful deaths at the hands of swords and kunai immediately after inheriting his memories, taught him: If you’re not strong enough, you’ll die! Awakening his Nen ability at seven, he possessed the power to reverse everything—the Special Type: Book of World Resonance! When Gon needed strength to challenge Hisoka, Kael extended an invitation: “Sign a contract, and I’ll grant you the opportunity to train in another world; you’ll give me the power to reciprocate.” Thus, the strongest pirate crew in the Hunter x Hunter world set sail, and an organization stronger than Akatsuki was born in the ninja world. But Kael harbored a deepest secret: Did this seemingly fair contract truly reward the results of training, or the…fate itself of the contractors? As the bonds between the powerful figures of three worlds intertwined, what awaited them was the path to the highest… — Description from novelcodex.orgFull novel: HxH: Starting with a Contract, Gon goes to One Piece — read the rest free on N​o⁠v​e⁠l​C⁠o​d⁠e​x⁠.​o⁠r​g⁠