Seo I-han official photo - South Korean actor, star of Love Class 3

Seo I-han

BIOGRAPHY

Seo I-han (Korean: 서이한; born 1999) is a South Korean actor.

He studied at Sungkyunkwan University’s Department of Acting Arts and built a background in theater, short films, and commercial work, including stage productions such as Secret Garden, 97 Years, and Our Town, and short films Fantasia, Confession, and Hide and Seek Musical, before moving into television.

In 2026, Seo I-han made his television debut in the lead role of Yoon Su-an in the Korean BL drama Love Class 3, playing a former idol survival-show contestant who reunites years later with the man he once had feelings for.

BLGLFlix editorial view

A university acting department, then Thornton Wilder’s Our Town, then a lead in a boys’ love web series. That order is worth sitting with. Most of the performers recorded on this site arrived through an agency scheme or a talent competition and learned in front of a camera; he arrived from a stage, having done the coursework. Korean BL is often described as a place for newcomers with no other options, and this record is a straightforward counter-example.

There is a neat irony inside the casting too. His character is a former contestant on an idol survival show, the exact route that supplied several of the other people in this catalogue. The one actor here who did not come through that system is playing someone who did.

This page shows its confidence levels rather than hiding them, and it is worth explaining once. His height and weight appear because two independent sources give the same figures. His birth year appears but not the day, because only one source states the day. His legal name is absent because the two sources that mention it do not agree. His agency field is empty because a single source describing him as unaffiliated is not enough to publish a fact about someone’s professional representation. Four different fields, four different outcomes, one rule applied to each.

PROFILE DETAILS

Native Name
서이한
Nickname
Seo Yi-han
Pronouns
he/him
Gender
Male
Height
174 cm (5'9")
Weight
59 kg (130 lbs)
Profession
Nationality
Debut
2026 — Love Class 3 (television debut)
Years Active
2026-present

FILMOGRAPHY — TV SERIES (1)

TRIVIA

  • Trained in choreography, K-pop dance, contemporary dance, fencing, and bowling as special skills.
  • Appeared in commercials for LG gram and Anua prior to his television debut.

EDUCATION

  • Sungkyunkwan University, Department of Acting Arts

FREQUENTLY ASKED QUESTIONS

What is Seo I-han's real name?

Sources disagree on his legal birth name; BLGLFLIX has not been able to independently confirm it, so only his professional name is used here.

Is Love Class 3 Seo I-han's acting debut?

It is his television debut. He previously appeared in theater productions, short films, and commercials.

What is Seo I-han's character in Love Class 3?

He plays Yoon Su-an, a former idol survival-show contestant reunited years later with his old crush.

What agency is Seo I-han signed to?

As of this writing, he has not been publicly confirmed as being signed to any talent agency.

Biographical details and any photograph on this page come from TMDB and the sources named in our editorial notes. This product uses the TMDB API but is not endorsed or certified by TMDB. BLGLFLIX is an independent reference site with no affiliation to the person profiled or their agency, and does not publish speculation about anyone’s private life. Full copyright, correction and takedown policy: Disclaimer.

Sources

5 sources

Every factual claim on this page is taken from the records below. Where two sources disagree, the disagreement is stated in the text rather than resolved silently.

  1. TMDB themoviedb.org/person/6133895
  2. FILMMAKERS filmmakers.co.kr/actorProfiles/22598151
  3. Wikipedia en.wikipedia.org/wiki/Love_Class_3
  4. HANCINEMA hancinema.net/korean_drama_Love_Class_-_Season_3.php
  5. KORSERIES korseries.com/bl-drama-love-class-3-confirmed-for...

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