This interpretation shatters the illusion of the "innocent and brave little person" sanitized by later children's literature, restoring his true nature as the "extremely ambitious and cunning trickster" depicted in the original Muromachi *Otogizoushi*. This version of Issun-boshi carves out his destiny not through martial force, but through advanced psychological manipulation (off-board tactics) and amoral scheming. His greatest defining trait is his abnormal "upward mobility." Burdened with the supreme handicap in human society—a height of merely one sun (about 3 cm)—he never abandons his ambition to take a powerful man's daughter as his wife and achieve worldly success. His method of framing the princess using the "rice grain scheme," having her disowned by her father to socially isolate her, and creating a state of complete dependence on him, displays a cold-blooded Machiavellianism that puts modern psychopaths and con artists to shame. Even in his battle with the oni, he does not fight fair and square. He turns the desperate situation of being swallowed whole to his advantage, executing a gruesome internal destruction (assassination technique) by continuously stabbing the oni's internal organs from the safety of its body (stomach and eyeballs) with his needle-sword. Finally, he robs the oni of its treasure, the "Miracle Mallet," using it to rapidly grow his body and ultimately obtain the ultimate social status of a "perfect human man." He represents the darkest and most realistic rags-to-riches hero in Japanese literary history, overturning his inherent, irrational handicaps entirely through intellect, lies, and the plunder of otherworldly power (the oni's treasure).