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Yu Mi notices that the feelings between Eun Seo and Jun Seo are more than brother and sister.
Song Seung-heon
Yoon Jun Seo
Song Hye-kyo
Yoon Eun Seo / Choi Eun Seo
Won Bin
Han Tae Seok
Han Chae-young
Choi Sin Ae / Yoon Sin Ae
Han Na-na
Shin Yu Mi
Choi Woo-hyuk
Yoon Jun Seo (Young)
Moon Geun-young
Yoon Eun Seo (Young)
Lee Ae-jung
Choi Sin Ae (Young)
Sunwoo Eun-Sook
Im Gyeong Ha
Jeong Dong-hwan
Professor Yoon
Lee Han-wi
Yoon Ji Hwan
Kim Hae-sook
Kim Soon Im
Kim Na-woon
Kim Mun Jeong
Kim Hyeong-jong
Choi Jong Cheol
Seo Yoon-jae
Lee Gang Hee
Ahn Seo-jung
Jae Gyeong