Seo In Gook - Calling You (vostfr)

[MV] Seo In Gook (Gagnant Superstar K) - Calling You

[MV] Seo In Gook - Calling You (부른다)

Seo In Gook (서인국) (Superstar K) - Calling You Full MV [german sub]

Seo In Gook - Broken (vostfr)

Seo In Guk - Shake It Up (vostfr)

[VOSTFR] Seo in guk & Jung Eunji ( APINK ) - All for you

Seo In Guk - Love U (vostfr)

SEO IN GUK TIDAK BERHENTI TERTAWA DI SEKITAR PARK BO YOUNG - MOMEN MANIS PARK BO YOUNG & SEO IN GUK

[ENG] Answer Me, 1997 Behind the Scenes - Seo In Gook + Jung Eun Ji

[K STAR REPORT] Seo In Gook, special cameo for [Oh My Ghostness] (서인국, [오 나의 귀신님] 훈남 셰프로 깜짝 출연)

Eun Ji & Seo In Gook - All For You MV [English subs Romanization Hangul] HD

Seo In Gook (서인국) (Superstar K)Take

[ENG] Answer Me, 1997 - Behind the Scenes (Seo In Gook & Jung Eun Ji)

[ENG] 120905 Answer Me, 1997 Duet Support - Seo In Gook + Jung Eun Ji

Seo In Gook - Love U (Sub Spanish)

Seo In Gook (서인국) (Superstar K) - Take Full MV (Karaoke) [german sub]

[I Live Alone] 나 혼자 산다 - Seo kang jun, "Lee Gook Joo is a faithful man supposed to meet" 20160205

Seo In Gook - Love Song

[MV]Take - Seo In Gook

[100702] IU, Seo In Gook - Nagging @ MuBa

Seo in Guk kiss

Seo In-guk - With laughter or with tears

091107 Seo In Guk KJE's Chocolate 和訳

Phone - Pick up the phone Seo In Guk k-pop [german sub]

Simply K-Pop Ep059C08 Seo In Guk - With Laughter Or With Tears