Let’s talk about Hashiri Nio for a moment—she’s one of the standout characters in the anime Riddle Story of Devil (Akuma no Riddle), which first hit screens back in April 2014. Hashiri Nio, voiced by the talented Ayaka Suwa, is a student at Myojo Academy’s infamous Black Class—a top-tier school that secretly trains elite female assassins. While she isn’t the central focus of the story, Hashiri Nio plays a crucial supporting role, often serving as a light-hearted yet cunning antagonist. Her personality? Well, she’s definitely mischievous and playful, always teasing her classmates and bringing some much-needed comic relief to an otherwise tense atmosphere.

Visually, Hashiri Nio fits the classic schoolgirl mold—short, curly hair, bright eyes, and that ever-present smirk that hints at her trickster nature. She’s almost always seen in her signature uniform: a black-and-white sailor-style outfit with yellow trim, giving her a sharp but youthful look. But don’t let her cute appearance fool you—Hashiri Nio packs a serious punch when it comes to abilities. Her most notable skill is illusion creation, a power she uses masterfully in combat. These illusions are so realistic that even seasoned assassins within the Black Class have been completely fooled by them. It’s this blend of charm and deception that makes Hashiri Nio such a fascinating character.

Now, while she loves to joke around and stir up trouble, Hashiri Nio is far from unserious. In fact, she’s deeply invested in the deadly competition taking place at the academy—where students are tasked with assassinating a single target. She’s highly competitive and driven to win, showing off both intelligence and strategy throughout the series. Yet, what really sets Hashiri Nio apart is her sense of fair play. Despite being out to eliminate others, she respects her opponents and even helps them sharpen their skills—because, to her, a more challenging game is a more enjoyable one. That unique balance of rivalry and camaraderie makes Hashiri Nio a fan favorite and adds a dynamic layer to the show’s intense narrative.

When we dive into personality typing, there’s a strong case to be made that Hashiri Nio fits the ENTP profile—Extraverted, Intuitive, Thinking, Perceiving. Why? Because ENTPs are known for their quick wit, creativity, and love of intellectual challenges—all traits that Hashiri Nio displays regularly. She thrives on improvisation, coming up with clever plans on the fly, and her resourcefulness in high-pressure situations is undeniable. Plus, she’s naturally charismatic, easily blending in or standing out depending on what the situation calls for. Hashiri Nio enjoys social interaction, often using humor and mind games to engage with others.

That said, like many ENTPs, Hashiri Nio can come across as emotionally detached or even insensitive at times. Her logical approach to problems means she doesn’t always consider the emotional impact her actions might have on others—especially when it comes to her classmates’ safety. But this isn’t out of malice; it’s more about seeing everything through the lens of a game. And when she wants to influence someone, Hashiri Nio proves to be incredibly persuasive—using charm, logic, or manipulation as needed. So while we can’t say for sure, the evidence points strongly toward Hashiri Nio embodying the ENTP personality type.

Looking at things from another angle—the Enneagram—Hashiri Nio seems to align closely with Type 7: The Enthusiast. This makes a lot of sense when you think about her constant pursuit of excitement, novelty, and fun. Hashiri Nio avoids boredom like the plague, always seeking the next thrill, the next prank, the next challenge. Her energetic, impulsive behavior and adaptability are textbook Type 7 traits. She lives in the moment, chasing stimulation and avoiding anything that feels restrictive or dull.

But beneath that cheerful, carefree exterior, there might be more going on. Type 7s often use their zest for life to mask deeper anxieties or emotional discomfort. In Hashiri Nio’s case, her obsession with entertainment and humor could be a way to distract herself from painful feelings or past trauma. Instead of sitting with sadness or fear, she jumps into action, creating chaos and laughter—anything to keep those darker emotions at bay. This duality—between outward playfulness and inner vulnerability—is a hallmark of Enneagram 7s, and it adds depth to Hashiri Nio’s character.

In the end, whether you’re analyzing her through MBTI or Enneagram, one thing remains clear: Hashiri Nio is a complex, entertaining, and strategically brilliant character. Her presence elevates Riddle Story of Devil, offering both levity and tension in equal measure. From her illusion-based tactics to her unpredictable personality, Hashiri Nio leaves a lasting impression. And honestly, it’s hard to imagine the series without her—because when Hashiri Nio is on screen, you just know something exciting is about to happen.