Katsuma Shimano is a character who, while not part of the main cast, leaves a lasting impression in the world of My Hero Academia—or Boku no Hero Academia, as it’s originally known. He makes his debut in the movie My Hero Academia: Heroes Rising, which hit Japanese theaters in December 2019 and quickly became a fan favorite. Now, Katsuma isn’t someone you’d expect to stand out at first glance—he’s just a young boy living on Nabu Island, a quiet, isolated place with a small but tight-knit community. But as the story unfolds, it becomes clear that Katsuma Shimano has more depth than meets the eye.

In Heroes Rising, the peaceful life on Nabu Island is shattered when a group of dangerous villains launch an attack, hunting for a powerful quirk held by one of the islanders. Among those targeted are Katsuma and his older sister, Mahoro. And here’s where Katsuma really starts to shine. Despite being just a kid, he doesn’t freeze up or run away. Instead, he steps up—teamwork in mind—and joins forces with the main heroes of My Hero Academia to protect his home. That kind of courage? It’s rare, especially in someone so young.

What makes Katsuma Shimano so memorable is how fiercely protective he is. His loyalty to his sister isn’t just touching—it’s central to who he is. He’s willing to put himself in harm’s way without hesitation, all to keep Mahoro safe. And beyond that, he genuinely cares about everyone on the island. His actions during the crisis aren’t flashy like a top-tier hero’s, but they matter. In fact, they play a crucial role in turning the tide against the villains. Without Katsuma Shimano’s bravery and quick thinking, things might have ended very differently.

Fans of My Hero Academia have really connected with Katsuma. Maybe it’s because he represents something pure—doing the right thing not for glory, but because it’s necessary. Even though he’s only in one movie, his impact lingers. Katsuma Shimano has become a symbol of quiet strength, of standing firm even when you’re scared. And honestly, that’s something a lot of people can relate to.

Now, if we dive into personality types, Katsuma Shimano fits the ISFJ profile—also known as “The Defender”—almost perfectly. This type is all about duty, care, and loyalty, and Katsuma embodies that. He’s practical, always thinking ahead, and deeply responsible—especially when it comes to looking after Mahoro. He uses his quirk wisely, not for personal gain, but to help others heal and stay safe. That resourcefulness under pressure shows just how grounded and level-headed he can be.

But like many ISFJs, Katsuma also struggles with worry. He overthinks. He fears the worst, especially when it comes to his sister’s safety. That anxiety? It’s real, and it makes him feel conflicted. Still, he doesn’t let it stop him. In fact, pushing through that fear is what makes his courage so meaningful. So yeah, while Katsuma Shimano may seem like a quiet background character at first, his inner strength speaks volumes.

Looking at things from another angle—the Enneagram—Katsuma Shimano lines up strongly with Type Six, “The Loyalist.” This type is defined by a deep need for security and trust. And honestly, that’s Katsuma in a nutshell. He’s constantly aware of danger, often seen wearing protective gear, which shows how much he values safety. His loyalty? Unshakable. When Eri offers him a chance to escape the battle, he turns it down—not because he’s reckless, but because he believes in protecting his home and the people he loves.

He also looks up to authority figures—his sister, Lemillion, Izuku Midoriya—for guidance. That reliance isn’t weakness; it’s part of how he copes. Rules, structure, trusted leaders—they give him a sense of stability. And let’s be honest, in a world full of quirks and chaos, who wouldn’t want that? Plus, his anxious tendencies? Totally in line with a Six. He’s always alert, always scanning for threats. But again, he doesn’t break. He pushes forward.

Then there’s astrology. Born on March 16, Katsuma Shimano falls under Pisces—a sign known for empathy, imagination, and emotional depth. And wow, does that fit. He’s gentle, introspective, and deeply compassionate. His quirk, which speeds up healing, feels almost symbolic—like an extension of his Pisces nature, wanting to soothe pain and mend what’s broken.

Pisces folks also tend to retreat inward when overwhelmed, and we see that too. Remember when he hides during intense moments, like in the heat of battle? That’s not cowardice—it’s self-preservation, a momentary escape into his own mind. It’s a very human reaction, and it makes him feel all the more real.

So, putting it all together—MBTI, Enneagram, zodiac—Katsuma Shimano emerges as a layered, thoughtful character. He’s brave but afraid, loyal but anxious, strong yet sensitive. And while he only appears in one movie, his presence resonates. He reminds us that heroes don’t always have to be loud or flashy. Sometimes, they’re quiet kids doing their best to protect the people they love.

In the end, whether you’re analyzing his ISFJ traits, his Six tendencies, or his Pisces soul, one thing is clear: Katsuma Shimano matters. He’s proof that even minor characters can carry major heart. And in the ever-expanding universe of My Hero Academia, Katsuma Shimano stands as a quiet beacon of hope, resilience, and unwavering care.