Learn Korean with Twenty-Five Twenty-One

Yes, Twenty-Five Twenty-One is a B2-level pick for Korean learners. This coming-of-age story set in the late 1990s follows young athletes and dreamers, so it carries teen slang and rapid youthful dialogue. The emotional, character-driven pacing and clear enunciation keep it approachable at B2.

Key takeaways

  • Twenty-Five Twenty-One is a B2-level pick for Korean, best suited to upper-intermediate learners.
  • A coming-of-age drama with heartfelt, character-driven Korean.
  • It runs 1 season, 16 episodes, so its vocabulary recurs enough that finishing it builds real Korean listening.
  • Against the 18 other Korean titles in our difficulty index, it is easier than 4 of them.
  • Expect everyday Korean such as 펜싱 and 청춘.
  • Watch it with Korean subtitles rather than your own language, which the research links to the biggest listening gain.
Difficulty
B2 (challenging)
Best for
upper-intermediate learners
Format
TV series
Length
1 season, 16 episodes
Genre
romance, drama, teen, slice-of-life
Platform
Netflix
Relative difficulty
Easier than 4 of 18 other Korean titles we rate
In our index
1 of 19 Korean titles

How we rate difficulty

Wondering how long the whole language takes? How long it takes to learn Korean.

Korean words you'll hear in Twenty-Five Twenty-One

펜싱
fencing (the sport) (pensing)
청춘
youth, the springtime of life (cheongchun)
dream (kkum)
친구
friend (chingu)
사랑
love (sarang)

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Frequently asked questions

Is Twenty-Five Twenty-One good for intermediate Korean?
Yes. It has teen slang and quick dialogue, but the clear enunciation and emotional pacing make it a rewarding B2 watch with graded subtitles.