The South Korean actor is best known for his roles inMr.

Sunshine,where he plays Goo Dong-mae,A Bloody Lucky Day, andSteel Rain 2.

He also stars inHospital Playlist,The Interest of Love, andThe Accidental Narco.

Image of Si-eun and Jun-tae from Weak Hero Class 2.

Romantic

Dr. Kang Dong-joo

Character:Baek Sa-eon is the presidential spokesperson who used to be a news announcer.

Baek Sa-eon is married to Hong Hee-joo and doesn’t seem to like her very much.

But his feelings for her begin to change as the series goes on.

Characters from Hospital Playlist and Business Proposal are edited in a collage.

She is mostly recognized for starring inSassy Go Go,Bluebirds House, andHijack 1971.

She’s stuck in an unhappy marriage with Baek Sa-eon who she despises for keeping their relationship a secret.

Jo Sang-woos involvement in Hee-joo’s life causes tension between her and her husband.

Lee Joon-young as Seong-je  in Weak Hero Class 2__

He is known for his roles inAlchemy of Souls,Vicenzo, andCrash Landing On You.

Yoo Seong-joo as Baek Eui-yong:Yoo Seong-joo has had an illustrious acting career.

He has acted in movies and TV shows such asSquid Game,The Silent Sea,Decoy, andHopeless.

Hee-joo and Sa-eon in When the Phone Rings

Choi Woo-jin as Park Do-jae:Choi Woo-jin was born on June 4, 1995.

She is best known for her roles inThe Great Seer,Radio Romance, andUnlocked.