Anzai Yuuki is one of the central figures in the anime series Devils’ Line, and honestly, it’s hard not to be drawn into his story. As a half-human, half-devil hybrid—what they call an Akuma—he works with a specialized police unit that deals specifically with devil-related crimes. Now, what makes Anzai Yuuki so interesting isn’t just his role on the force, but who he is beneath the surface. Thanks to his mixed heritage, Anzai Yuuki has this unique ability to sense and even suppress devil impulses, which naturally makes him an invaluable asset to the department. But let’s be real—he’s far more than just a tool for law enforcement.

Even though Anzai Yuuki looks completely human, he’s constantly battling the darker side within himself. The fear of losing control to his devil instincts is always there, lurking in the background. And things get even more complicated when he meets Tsukasa, a human woman who slowly becomes a major part of his life. His feelings for her bring up all kinds of emotional turmoil—on one hand, he wants nothing more than to protect her; on the other, he knows his very nature could put her in danger. This push and pull between love and risk forms the emotional core of the series, giving us deep dives into themes like identity, societal prejudice, and what it really means to be human.

Throughout Devils’ Line, Anzai Yuuki undergoes a powerful journey of self-discovery. At first, he comes off as cold, distant—almost robotic in how he handles situations. But over time, especially through his relationship with Tsukasa and interactions with others, we start seeing cracks in that armor. Anzai Yuuki begins to open up, showing vulnerability, doubt, and even hope. Watching him evolve from someone detached to someone deeply invested in both his mission and his personal connections is honestly one of the most compelling arcs in the series. In the end, it’s Anzai Yuuki’s courage to face his inner demons head-on, while still striving to do what’s right, that truly sets him apart.

From a personality standpoint, Anzai Yuuki fits the ISTP type pretty well. These individuals tend to be calm under pressure, highly logical, and incredibly resourceful—traits that describe Anzai Yuuki to a T. As a half-devil officer, he approaches every situation with a no-nonsense attitude, relying on instinct and quick thinking rather than emotion. Whether it’s analyzing a threat or making split-second decisions in combat, Anzai Yuuki consistently proves his skill and effectiveness. He’s got a strong moral compass too—driven by a deep sense of duty to protect humans from the unpredictable dangers posed by devils.

Another thing about ISTPs? They value independence. And yeah, Anzai Yuuki definitely fits that mold. He doesn’t like being micromanaged or given unnecessary orders. You’ll often find him working solo, pushing back against authority when he feels it’s unjust. Sure, that rebellious streak lands him in hot water now and then, but it’s never out of selfishness—it’s because he genuinely cares about the people around him and wants to protect them in his own way.

When we look at Anzai Yuuki through the lens of the Enneagram, he clearly aligns with Type 9—the Peacemaker. This type craves harmony, both internally and externally, and tends to avoid conflict whenever possible. Sound familiar? Anzai Yuuki spends much of his time trying to balance the two sides of himself—human and devil—struggling to find peace within. He uses meditation and discipline to keep his emotions in check, seeking stability in a world that often sees him as a threat. And when it comes to relationships, especially with Tsukasa, he often holds back difficult conversations, not because he doesn’t care, but because he fears disrupting the fragile peace they’ve built.

But here’s the thing—Type 9s aren’t passive forever. When their values are challenged or the people they love are threatened, they can become surprisingly assertive. And that’s exactly what happens with Anzai Yuuki. Despite his desire to avoid conflict, he stands firm when it matters most—fighting not only for Tsukasa’s safety but for the very idea that coexistence between humans and devils is possible. That kind of quiet strength, rooted in compassion and conviction, is the healthiest expression of a Type 9.

So, putting it all together, Anzai Yuuki is much more than just another brooding antihero. His blend of practicality, emotional depth, and inner conflict makes him a standout character. Whether you’re analyzing his ISTP tendencies or his Peacemaker motivations, one thing remains clear: Anzai Yuuki is driven by a deep need for balance, justice, and connection. And that’s why, long after the credits roll, Anzai Yuuki stays with you.