In the World of One Piece, What's with This Ninjutsu System?

After transmigrating to the world of pirates, Rogge gets bound to an all-purpose ninjutsu System! Rogge is left staring in disbelief. “System, did you get the wrong channel?” He joins the Marine Headquarters, where Chief Instructor Zephyr teaches him the Six Powers: “The Six Powers are martial arts that surpass the limits of the human body. Train hard!” 【Ding! The Host is learning martial arts. System assessment: Eight Gates!】 Zephyr stares at the training ground reduced to ashes and falls into deep thought. “You said Night Guy… is that a kind of Tempest Kick?” He watches Green Bull use the Woods-Woods Fruit: 【The Host is sensing the vitality of plants and forests. System assessment: Wood Release, a Bloodline Limit!】 Green Bull looks at the colossal Buddha towering behind Rogge and completely loses it. “I’m the Devil Fruit User here! What the hell is that thing blocking out the sky?” He watches Kizaru move at the speed of light…【System assessment: The Yellow Flash, Flying Thunder God!】 He observes Akainu spewing magma…【System assessment: Lava Release, a Bloodline Limit!】 Then comes the Paramount War, where Rogge clashes head-on with Whitebeard. The Admirals are stunned, the Four Emperors are dumbfounded, and even Imu can’t sit still! Rogge: “At first, I really thought the System had made a mistake. Now I think… this is freaking perfect!”