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Series

At Eighteen

20191h 10m6.9 / 101 seasons

A misunderstood loner is drawn out of his shell after transferring to another high school, where he comes across new ordeals -- and first love.

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Available in US

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Season guide

Season 1

16 episodes available

Episode 1: The Nameless Kid, Choe Jun-u

1h 8m

Not long after arriving at a new high school, where he's shown around by star student Ma Hwi-yeong, Choe Jun-u faces an unfair accusation.

Episode 2: A Moment I Want to Run Away

1h 4m

Jun-u prepares to transfer schools again. Yu Su-bin doesn't believe Jun-u took the watch. Hwi-yeong won't own up to what he did.

Episode 3: It Always Rains on a Sad Day

1h 7m

Jun-u beats out Hwi-yeong to pair up with Su-bin for a class assignment, and receives an urgent call about an old friend.

On screen

Cast & Characters

Ong Seong-wu

Choi Joon-Woo

Kim Hyang-gi

Yoo Soo-Bin

Shin Seung-ho

Ma Whi-Young

Kang Ki-young

Oh Han-Kyeol

Shim Yi Young

Joon-Woo's mother

Kim Sun-young

Soo-Bin's mother

Choi Jae-woong

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Episode 4: Happiness and Sadness Come and Go Instantly

1h 6m

Su-bin and Jun-u continue practicing their English for the upcoming evaluation. Sin Jeong-hu writes a letter, and makes a heartfelt apology.

Episode 5: After that Long and Sad Day

1h 7m

Jun-u's outburst of rage panics Hwi-yeong, who has something to cover up. O Han-kyeol visits someone who can testify to the truth.

Episode 6: The Timing of Action and Reaction

1h 4m

Fighting with her mother, Su-bin doesn't go home. Determined to reveal Hwi-yeong's true nature, Jun-u starts to gain insight into his behavior.

Episode 7: Romeo and Juliet

1h 1m

Su-bin and Jun-u can't stop thinking about each other -- but don't know what to do about it. Hwi-yeong agonizes over one wrong answer on a math test.

Episode 8: The Moment of Your First Love

1h 2m

Even as Su-bin learns she's not the only one who likes Jun-u, she's excited for their first date. Jo Sang-hun goes up against Hwi-yeong's parents.

Episode 9: I'm Sorry

1h 7m

Hwi-yeong sends Su-bin something that cuts her date with Jun-u short. Han-kyeol turns away a bribe. Yun Song-hui searches for a driver.

Episode 10: The Night That Will Never Return

58m

When the class goes on a trip together, the students bring with them a tangled mess of relationship and personal dramas.

Episode 11: The Emotions That I Got to Know Through You

1h 2m

Han-kyeol deals with a petition to replace him. Hwi-yeong removes Su-bin from the tutor group, which bothers Song-hui more than it does her.

Episode 12: Being More Mature Than Adults at the Age of 18

1h 4m

A rumor about Hwi-yeong's grades being rigged spreads like wildfire. Su-bin hesitates to tell Song-hui something, and meets with her father.

Episode 13: I Should Still Like You

1h 8m

Finals approach, Song-hui's disapproval forces Su-bin and Jun-u apart, and Han-kyeol tracks down Hwi-yeong's old teacher.

Episode 14: Happy Birthday to You

1h 3m

Everyone worries when the rumor about Hwi-yeong gets him into real trouble. Jun-u tells Han-kyeol about his newfound goal.

Episode 15: Ways to Embrace Your Scar

1h 6m

Song-hui remains stubborn about Su-bin and Jun-u, who enters an art academy. The school board investigates Hwi-yeong's case.

Episode 16: This Goodbye Isn't Forever

1h 6m

Hwi-yeong makes peace with the others -- and himself. Jun-u realizes his mother's situation, and must break difficult news to Su-bin.

Choi Myeong-jun

Moon Bin

Jung Oh-je

Jeong Young-ju

Park Geum-ja

Jung Hyeon-jun

Choi Joon-Woo (young)

Yoo In-soo

Yoo Pil-Sang

Han Sung-min

Hwang Ro Mi [Soo Bin's classmate]