Webtoons get adapted into live-action dramas every single week. Most of them are forgettable. They've got the same glossy filters, the same predictable love triangles, and the same "will they, won't they" tropes that feel like they were written by a bot. But then you have The World of My 17.
Kinda weird name, right? In Korea, it’s actually Girl’s World (Sonyonara).
When it dropped on tvN D in 2020, people expected a cute, fluffy high school story. What they got was a painful, honest, and surprisingly deep look at how female friendships actually function when you're 17 and everything feels like the end of the world. It wasn't just about boys. Honestly, the boys were barely the point. It was about the hierarchy of "pretty" girls, the trauma of middle school bullying, and how hard it is to feel like you belong when you’re the "ordinary" one in a group of goddesses.
Why Oh Na-ri is the protagonist we actually needed
Let's talk about Oh Na-ri. Arin from Oh My Girl played her, and she basically nailed the "painfully relatable" vibe.
Na-ri starts the series having just lost a bunch of weight over the summer. She thinks she's finally ready to be the "main character" of her own life. But then she walks into school and realizes her three best friends are basically supermodels. You've got the rich, cold Im Yu-na; the talented, quiet Lim Sun-ji; and the bubbly, popular Seo Mi-rae.
Suddenly, Na-ri feels like the "ugly duckling" again.
It’s a specific kind of social anxiety that The World of My 17 captures perfectly. It’s that sinking feeling in your stomach when you’re standing in a group photo and you’re convinced you’re the one ruining the aesthetic. Most dramas would solve this with a "she was beautiful all along" makeover scene. This show didn't do that. It forced Na-ri—and the audience—to realize that her value wasn't tied to being the prettiest person in the room.
The dark side of the "Pretty Girl" trope
We usually see "the popular girl" as the villain in these stories. You know the type: the one who wears the shortest skirt and spends her time sabotaging the lead.
Im Yu-na (played by Hwang Bo-reum-byeol) flips that on its head.
Yu-na is wealthy and stunning, but she’s also incredibly lonely. Her friendship with Na-ri is the emotional backbone of the series. There’s a specific plot point involving a misunderstanding from their childhood—a classic trope—but it’s handled with such nuance. Yu-na isn't cold because she’s mean; she’s cold because she’s been used by people who only wanted to be near her for her status.
It’s actually kinda heartbreaking.
The show dives deep into the "backstage" of being popular. We see the rumors, the jealousy, and the way other students treat popular girls like objects rather than people. When Mi-rae gets targeted by bullies, the show doesn't pull punches. It shows how social media can be weaponized in a high school setting, something the original webtoon by Morangg was praised for depicting with brutal accuracy.
Realism vs. the "K-Drama" aesthetic
Visually, the show is bright. It looks like a candy store. But the writing? The writing is grounded.
Take Lim Sun-ji’s character arc. She’s the girl who seems a bit "slow" or ditsy at first glance. In a lesser show, she’d just be comic relief. In The World of My 17, we learn about her home life, her struggles with her grandmother's bakery, and the quiet dignity she carries.
The pacing of the web drama format (episodes are usually under 20 minutes) means there’s no filler. No 10-minute slow-motion walking scenes. Just pure character development.
Season 2: The controversial shift
We have to address the elephant in the room. Season 2.
In 2021, the show returned with a mostly new cast. Choi Ye-na (formerly of IZ*ONE) took over the role of Na-ri. Fans were split. Some loved the new energy; others missed the chemistry of the original four.
Transitioning a successful show to a new lead is always a gamble.
The second season leaned a bit more into the romance—the introduction of the "two male leads" dynamic. While it was still charming, it lost a bit of that raw "girls against the world" grit that made the first season a viral hit on platforms like VLive and YouTube.
However, the core message stayed the same: growing up is messy.
What most people get wrong about "The World of My 17"
People look at the poster and think it’s just for teenage girls.
Wrong.
The show is actually a masterclass in psychology. It looks at the "looking-glass self"—the sociological concept that we build our identity based on how we think others perceive us. Na-ri’s struggle isn't about her actual face; it’s about the mirror she’s looking into, which is distorted by her peers' expectations.
If you’ve ever felt like an imposter in your own friend group, this show hits like a freight train.
How to actually apply the lessons from the show
If you’re watching or re-watching this in 2026, there are a few things you can actually take away from it beyond just "staying loyal to your friends."
First, stop comparing your "behind-the-scenes" to everyone else's "highlight reel." Even the "Yu-nas" of your world are struggling with something you can’t see.
Second, recognize the difference between a friend who likes you for what you are (popular, useful, funny) and a friend who likes you for who you are. The show makes a very clear distinction here.
Lastly, understand that your "ordinary" is someone else’s "extraordinary." Na-ri spent the whole time wishing she was like her friends, while her friends were secretly envying her warmth and her stable family life.
Moving forward with the series
If you’re new to the fandom, start with the first season. Don't skip to the second just because you like a specific idol. The world-building in the first 12 episodes is essential for understanding why these girls are so protective of one another.
Pro-tip for viewers: Read the webtoon simultaneously. The drama does a great job, but the webtoon goes much deeper into the backstories of the side characters, especially the tension between Mi-rae and the other trainees at her idol agency.
- Watch Season 1 on official streaming platforms like Viki or the tvN D YouTube channel.
- Pay attention to the subtle color palettes—each girl has a specific "color" that reflects her personality growth.
- Look for the "Girl's World" webtoon on Naver or Line Webtoon to see the original ending, which differs slightly from the show.
The reality is that being 17 is a temporary state, but the insecurities we develop during that time can last a lifetime if we don't address them. The World of My 17 isn't just a show about high school; it’s a manual on how to be a better human being to the people you love. It’s about realizing that you don’t have to be the "main character" to have a story worth telling.
Go watch it. Or re-watch it. You'll probably find a piece of yourself you forgot existed.
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