When he is involved in an accident one day, she finds herself rudely awakened from her sheltered life and forced to mature, encountering numerous hardships before she gradually becomes an independent person. Eun family
* Park In Hwan as Eun Ki Hwan (Chae Ryung's father)
* Moon Chae Won as Eun Chae Ryung
* Lee Hee Jin as Eun Ae Ryung
* Kang Won (강원) as Eun Ho Ryung
* Kim Hye Ok
as Heo Sook Hee
* Yoo Seung Mok (유승목) as Heo Man Soo
Choi family
* Lee B**g Gyu as Hyuk Gi's father
* Lee Yong Nyeo (이용녀) as Hyuk Gi's mother
* Choi Jin Hyuk as Choi Hyuk Gi
* Shin Min Soo as Choi Duk Gi
* Lee D**g Hae as Choi Wook Gi
Jung family
* Park Geun Hyung as Jung Pil Suk
* Yun Woon Kyung as Yeo Chang Ja
* Kang Sung as Jung Jin Goo
* Jin Se Yun as Jung Se Yeon
* Choi Ja Hye as Seo Hee Jae
Park family
* Lee Won Jae as Park Kwon (Jong Suk's father)
* Park Hye Jin (박혜진) as Mo Yoon Kyung (Jong Suk's mother)
* Jun Tae Soo as Park Jong Suk
Other people
* Hong Yeo Jin as Lee Soon Jung
* Lee Na (이나) as Go Yang Mi
* Jo Han Joon (조한준) as Park Moo Sool
* Kim D**g Gyoon as Kwak Kyun Woo
* Han Soo Min (한수민) as Geum Joo Hye
* Nam Ji Hyun as Shin Sun Hae
* Hwang Sun Hee (황선희) as Ma Ri Sol
* Min Ji Oh as Kang Bo Ra
* Kim Gyu Jin (김규진) as Shim Byung Chun
* Park Sang Hoon (박상훈) as Shin Sun Do
* Kang Min Hyuk as Hwang Yeon Doo
* Park Jung Geun (박정근) as Kang D**g Bo
* Marco as Marco
* Sung Chang Hoon (성창훈) as Ricardo
* Song Yi Woo as Jo Ah Ra
* Seo D**g Soo as Professor Kang
* Lee Jin Ah as Jun So Hyung
* Yoo Byung Sun (유병선) as Min Hyun Gyo
* Lee Sun Ah as Ah Young
* Yum D**g Hun (염동헌) as Ah Young's dad
* Choi Sung Joon as Doctor Hong
* Kim Min Seo as Park Da Bin
