The Strongest Trainer

How would Billy, who had transmigrated to the Pokémon world and become the original protagonist, walk the path of an uncopyable strong person and eventually become the strongest trainer? Beautiful ninjutsu, strange eye power, and powerful physical skills. Would he leave his own legend in this world, or would he be as unknown as in his previous life? The end of the Kanto region, the end of the Naruto Stormy prequel, the end of the Chengdu region, the end of the Naruto Stormy prequel, and the opening of the Fangyuan region…