Plot: In part 1, After Woo Jin shows Jeong Yeon the photo of them together ten years ago, she gets confused about who she is. In part 2, Beom Gyun meets Jeong Yeon who had become Bluebird
Cast
Yeo Jin-gooKim Woo-JinYeo Jin-goo was 19 in Circle - Season 1 - The Blue Bird (Episode 5).
Birthday: Wed, Aug 13 1997
Kim Kang-wooKim Joon-HyukKim Kang-woo was 38 in Circle - Season 1 - The Blue Bird (Episode 5).
Birthday: Tue, Jul 11 1978
Gong Seung-yeonHan Jung-YeonGong Seung-yeon was 24 in Circle - Season 1 - The Blue Bird (Episode 5).
Birthday: Sat, Feb 27 1993
Lee Gi-kwangLee Ho-SooLee Gi-kwang was 27 in Circle - Season 1 - The Blue Bird (Episode 5).
Birthday: Fri, Mar 30 1990
Kwon Hyuk-sooDetective OhKwon Hyuk-soo was 31 in Circle - Season 1 - The Blue Bird (Episode 5).
Birthday: Tue, May 06 1986
An Woo-yeonKim Beom-GyoonAn Woo-yeon was 26 in Circle - Season 1 - The Blue Bird (Episode 5).
Birthday: Mon, Jan 07 1991
Kim Joong-kiKim Kyu-CheolKim Joong-ki was 37 in Circle - Season 1 - The Blue Bird (Episode 5).
Birthday: Sun, Jul 22 1979
Min Sung-wookLee Hyun-SeokMin Sung-wook was 37 in Circle - Season 1 - The Blue Bird (Episode 5).
Birthday: Sat, Sep 22 1979
Nam Myung-ryeolYoon Hak-JooNam Myung-ryeol was 58 in Circle - Season 1 - The Blue Bird (Episode 5).
Birthday: Thu, May 14 1959
Lee Hwa-KyumSecretary ShinLee Hwa-Kyum was 22 in Circle - Season 1 - The Blue Bird (Episode 5).
Birthday: Mon, Jan 23 1995
Seo Hyeon-cheolHong Jin-HongSeo Hyeon-cheol was 52 in Circle - Season 1 - The Blue Bird (Episode 5).
Birthday: Mon, Apr 19 1965
Song Young-gyuHwang Yong-WooSong Young-gyu was 47 in Circle - Season 1 - The Blue Bird (Episode 5).
Birthday: Sat, Apr 18 1970
Oh Eui-sikLee Dong-SooOh Eui-sik was 33 in Circle - Season 1 - The Blue Bird (Episode 5).
Birthday: Tue, Nov 01 1983
Kim Ye-joonKim Bum-gyun (young)Kim Ye-joon was 10 in Circle - Season 1 - The Blue Bird (Episode 5).
Birthday: Sat, Apr 28 2007
Jung Ji-hoonKim Woo-jin (young)Jung Ji-hoon was 10 in Circle - Season 1 - The Blue Bird (Episode 5).
Birthday: Thu, May 31 2007
Jung In-sunPark Min-youngJung In-sun was 26 in Circle - Season 1 - The Blue Bird (Episode 5).
Birthday: Thu, Apr 25 1991