Hayashi found himself reincarnated into the world of Naruto, where he discovered the Template System, which granted him the skills of the Greatest Swordsman from the One Piece universe.  As he honed his abilities, Hayashi surpassed even the legendary White Fang of Konoha in swordsmanship, earning recognition in the ninja world. I don't own Naruto or One Piece. Kudos to Masashi Kishimoto and Eiichirō Oda.