The ABCs of Our Relationships

Oh Ha-ni

As Han-na

Eun Hae-seong

As Min-gyu

Lee Seo-yoon

As Ju-hee

Jang Jun-whee

As Sang-gyu

Kang Ae-sim

As

Park Ji-soo

As

Hong Sang-pyo

As Mr. Hwang

Cho Yun-hee

As Han-na's mother