Kim Nam-hee

Song Jun-ho

Cho Tae-gu (39 yo): a suspicious uninvited guest who visits the families of Do-hoon and Yu-ra.

Ma Hyung-woo, a psychiatrist who helps Ji-hyo

Park Woo-jin

A mobile store salesperson

Jin Seong-jun Moon Seong-hyun as young Jin Seong-joon

Ahn Ji-yong

Shin Han-soo

Actor (Ep.9–10)

Jung Jae-heon, a Korean-language teacher and devout Christian armed with a jingum, a traditional Korean sword, to protect himself and others. He struggles with alcoholism, relapsing due to the events unfolding in the series.

Drama Director.

Pyo Joon-soo (Matthew)

Heo Bom-il

Mori Takashi

Overworked doctor in ER

Jailor (ep 2)