OVA
Description
Unghia del piede di satana serves as the principal of Sparta Academy, an isolated boarding school renowned for its harsh discipline. He always wears a distinctive white demon mask and jester hood, concealing his face. His leadership imposes extreme punishments on students, especially targeting female pupils like Mayumi Takahashi for minor infractions or academic failures, using these situations to orchestrate sexual humiliation aligned with his personal inclinations. His primary objective is unmasking the secret identity of Kekko Kamen, whom he views as a threat to his authority. To achieve this, he deploys specialized enforcers called "Punishment Councilors," including Gestapoko, Shuwarutsu Negataro, Hanako Tanaka, and Mizutamari Tsuyokaro, each tasked with capturing Kekko Kamen or intensifying torment on students like Mayumi to lure her out.
Despite an outwardly absurd demeanor and comical attire, he possesses notable strategic acumen. He correctly deduces early that multiple individuals share the Kekko Kamen identity, suspecting they operate among both students and faculty. However, he only identifies four of the six actual sisters behind the persona, allowing them to maintain their secret through coordinated alibis. His tactics involve manipulating students and faculty, such as falsely accusing Mayumi of cheating to stage public humiliation events designed to draw out Kekko Kamen. He also exhibits adaptability, exploiting Kekko Kamen's susceptibility to distraction by masculine physiques by deploying Shuwarutsu Negataro against her.
Across all media adaptations—manga, OVA, and multiple live-action films—he consistently serves as the primary antagonist. He orchestrates increasingly elaborate schemes to unmask and defeat Kekko Kamen, though each confrontation ends in his defeat. In the manga's conclusion, his final battle involves all six Kekko Kamen sisters simultaneously, culminating in a decisive loss and the closure of Sparta Academy. During this climax, his mask is forcibly removed, revealing his face actually resembles the mask itself, including a prominent birthmark shaped like a foot with pointed toenails. This unmasking confirms his physical grotesqueness.
Despite an outwardly absurd demeanor and comical attire, he possesses notable strategic acumen. He correctly deduces early that multiple individuals share the Kekko Kamen identity, suspecting they operate among both students and faculty. However, he only identifies four of the six actual sisters behind the persona, allowing them to maintain their secret through coordinated alibis. His tactics involve manipulating students and faculty, such as falsely accusing Mayumi of cheating to stage public humiliation events designed to draw out Kekko Kamen. He also exhibits adaptability, exploiting Kekko Kamen's susceptibility to distraction by masculine physiques by deploying Shuwarutsu Negataro against her.
Across all media adaptations—manga, OVA, and multiple live-action films—he consistently serves as the primary antagonist. He orchestrates increasingly elaborate schemes to unmask and defeat Kekko Kamen, though each confrontation ends in his defeat. In the manga's conclusion, his final battle involves all six Kekko Kamen sisters simultaneously, culminating in a decisive loss and the closure of Sparta Academy. During this climax, his mask is forcibly removed, revealing his face actually resembles the mask itself, including a prominent birthmark shaped like a foot with pointed toenails. This unmasking confirms his physical grotesqueness.