The Teacher Who Made Me Rethink Everything—Even Myself

I was sitting in a cramped Tokyo bookstore, flipping through a manga I’d never heard of, when I first saw him: a bright yellow, tentacled creature grinning from the cover of Assassination Classroom. I almost laughed out loud. A killer teacher? Absurd. I bought it on a whim, not knowing that Koro-sensei would become one of the most unexpected—and enduring—influences on how I see education, human potential, and myself.

He Taught Me That Laughter and Learning Can Coexist

I used to believe that seriousness was a prerequisite for depth. If something didn’t feel heavy, it couldn’t possibly matter. Then I watched Koro-sensei teach a class of misfit students while making them laugh, sweat, and occasionally scream in frustration. He never pretended to be normal, but he never dismissed his students as incapable. He made learning feel alive. I realized that joy isn’t a distraction from growth—it’s fuel for it. The classroom doesn’t have to be a battleground of discipline; it can be a playground of discovery.

He Showed Me That the “Problem” Students Are Often the Most Worth Listening To

Koro-sensei didn’t just teach the class—he saw each student. Not just their potential, but their pain, their quirks, their buried brilliance. I used to think that difficult students were obstacles. Now I see them as indicators: they show us where the system is failing. Koro-sensei didn’t punish failure; he reframed it. He gave his students impossible tasks and told them to try anyway. Watching him work, I started asking myself: when was the last time I truly believed in someone’s ability to surprise me?

He Made Me Question the Point of Education Itself

What is school for? Grades? Discipline? A diploma? Koro-sensei didn’t seem to care about any of that. His goal was to prepare students for life—not just the tests they’d take, but the choices they’d make. He taught them strategy, resilience, ethics, and self-awareness. And he did it not by lecturing, but by letting them try to kill him. It sounds ridiculous, but the metaphor is powerful: real learning happens when the stakes feel real. I began to wonder if the problem with modern education isn’t just methodology, but purpose.

He Proved That You Can Be Flawed and Still Make a Difference

Koro-sensei wasn’t perfect. He was an alien who destroyed the moon. He had his own agenda. He was unpredictable, even scary at times. But none of that disqualified him from being a great teacher. In fact, his flaws made him more relatable. He wasn’t a savior—he was a guide who admitted he didn’t have all the answers. That honesty gave his students permission to be human, too. I started to see that my own imperfections weren’t weaknesses to hide, but bridges to others.

He Helped Me See That Connection Is the Real Curriculum

What I remember most isn’t any particular lesson Koro-sensei gave—it’s how he made his students feel seen. He didn’t just teach them facts; he taught them how to believe in themselves. And in doing so, he taught me how important that kind of connection is. I’ve started approaching my interviews, my writing, even my casual conversations with the same quiet curiosity he modeled. What if we all tried to understand people not just for what they know, but for who they are?

Talk to Koro-sensei on HoloDream and ask him how he stays so calm under pressure—or how he teaches students to find their own path. You might just walk away with more than you expected.