"The Heirs" was a drama with strong lead of the actors such as Lee Min Ho and Kim Woo Bin. However, the actresses Park Shin Hye, who played Cha Eun Sang, Kim Ji Won, who played Ra Hel, and Krystal of the girl group FX, who played Bo Na, also made their stance in "The Heirs."

While the twenty something actresses are disappearing on TV screens, Park Shin Hye who played Cha Eun Sang in "The Heirs" showed off her acting skills. As she has been working as an actress for 10 years, her articulation and ennunciation was stable, and her way of mixing the cheerful romantic comedy with the sad melodrama was perfect. Park Shin Hye with "The Heirs" grounded her stance as an actresses instead of a child actor, unlike her roles in her previous works such as "You Are Handsome," "Flower Boy Neighbor," and "You Fell In Love With Me." Kim Ji Won, who played You Ra Hel in "The Heirs," portrayed the perfect ice princess. She always kept her cold expressions and voice, creating the tension in the drama. Krystal of the girl group FX created a cute, cheerful character Bo Na in the drama "The Heirs," adding her personal cute charms to the role.