Kang Mi Rim (26) (Dal Rae's granddaughter) Yoon Seo Yun (윤서연) as young 11-year-old Mi RimKang Mi Rim (26) (Dal Rae's granddaughter) Yoon Seo Yun (윤서연) as young 11-year-old Mi Rim
Lee Se Jong / Jin Se Jong (7) (Young Kook's adopted son, Sa Ra's biological son)Lee Se Jong / Jin Se Jong (7) (Young Kook's adopted son, Sa Ra's biological son)
Kim Ji Young / Anna Kim (Young Kook's business partner, Dan Dan's biological mother)Kim Ji Young / Anna Kim (Young Kook's business partner, Dan Dan's biological mother)
Jang Kook Hee (42) (Jang Mi Sook's youngest sister, Young Kook's college friend) (ep 1-5)Jang Kook Hee (42) (Jang Mi Sook's youngest sister, Young Kook's college friend) (ep 1-5)