Kuroinu is one of the standout characters in the anime Summoned to Another World for a Second Time, also known as Isekai Shoukan wa Nidome Desu. The story centers around Mukouda Tsuyoshi, a man summoned to another world with the title of hero, tasked with defeating the Demon King. But once he arrives, things don’t go quite as expected—instead of being welcomed with open arms, Mukouda finds himself undervalued and essentially discarded by the kingdom that brought him there. So, rather than fight for ungrateful rulers, he chooses a quieter path: settling down in the countryside to live a more peaceful life.

That’s where Kuroinu comes in. She quickly becomes a central figure in Mukouda’s journey, serving as his loyal companion and protector in this unfamiliar realm. As a dark elf, Kuroinu brings both strength and skill to the table—she’s an incredibly capable warrior with a sharp mind for strategy and combat. While she might come off as serious or even cold at first glance, it doesn’t take long to see her deep sense of loyalty. In fact, Kuroinu is fiercely devoted to Mukouda and will go to great lengths to ensure his safety, often putting herself on the front lines without hesitation.

Over time, as they face various threats and navigate the unpredictable dangers of the new world together, Kuroinu proves to be more than just muscle—her tactical thinking and calm under pressure make all the difference in tough situations. And while Mukouda may have initially sought solitude, having Kuroinu by his side transforms their shared experience into something much greater. Their bond grows stronger with each challenge, evolving into a partnership built on trust, mutual respect, and unwavering support. Honestly, it’s hard to imagine Mukouda succeeding without Kuroinu standing right beside him.

Now, when we look at Kuroinu’s personality more closely, it’s pretty clear she fits the ISTJ (Introverted, Sensing, Thinking, Judging) type. She’s practical, dependable, and always seems to have a plan. Whether it’s organizing supplies, assessing enemy movements, or simply keeping order in their daily routine, Kuroinu approaches everything with precision. Her strong sense of duty drives her actions, and she clearly values structure, tradition, and responsibility. Even though she’s not one to express emotions openly, her commitment speaks volumes through what she does.

You can also see how her introverted nature plays out—she’s not looking for attention or praise, preferring instead to work quietly and efficiently behind the scenes. Yet despite her reserved demeanor, her presence is undeniably impactful. She thrives in environments that require discipline and consistency, making her not only a reliable ally but also a stabilizing force within the group. It’s no surprise then that many would view Kuroinu as the backbone of Mukouda’s growing circle.

From an Enneagram perspective, Kuroinu shows strong signs of being an 8w9—meaning her core type is Type 8, “The Challenger,” with a wing of Type 9, “The Peacemaker.” This blend makes for a compelling mix: she’s assertive, confident, and naturally takes charge when leadership is needed. There’s no doubt about her ability to stand her ground and protect those she cares about. But what really sets Kuroinu apart is that softer 9 influence—it tempers her intensity with patience and a desire for harmony. While she won’t back down from a fight, she’s also willing to listen, adapt, and maintain balance within the team.

So, in essence, Kuroinu balances power with peace, strength with sensitivity. She leads not just through dominance, but through consideration and cooperation. That duality defines her character—she’s not just a warrior; she’s a guardian, a strategist, and a trusted confidant. And throughout Summoned to Another World for a Second Time, Kuroinu consistently demonstrates why she’s such a vital part of Mukouda’s story.

All in all, whether you’re analyzing her MBTI or Enneagram, Kuroinu emerges as a deeply grounded, highly competent individual whose traits align closely with both ISTJ logic and 8w9 leadership. Of course, personality types aren’t set in stone—people, even fictional ones, can show different sides depending on circumstances—but if we had to pinpoint a consistent pattern, Kuroinu’s actions, decisions, and relationships strongly point toward these frameworks. And honestly, it’s fascinating to see how much depth lies beneath her stoic exterior. Kuroinu isn’t just a supporting character; she’s a cornerstone of the series, and her impact resonates every time she appears on screen.