Actor Moo Jin-sung made his first appearance as the genius hacker Ki Young-do in MBC's new Friday-Saturday drama 'Working Mom Killer,' simultaneously showcasing cool-headed charisma and warm charm.

Based on the popular webtoon of the same name, 'Working Mom Killer' depicts a working mom's quest to maintain work-life balance despite her deadly profession. In the drama, Moo Jin-sung's character Ki Young-do belongs to the Sales Team 3 at Durumi Electronics and is a core hacker responsible for field backup.

In episodes 1 and 2, Ki Young-do provided flawless support to Yu Bo-na as she attended her first meeting after returning to work, leading a perfect operation. In particular, he delicately portrayed the shift in warmth shown only toward Yu Bo-na and subtle emotions, sparking viewers' curiosity.

Having portrayed intense villain characters in previous works, Moo Jin-sung is receiving praise for successfully transforming into a character of a completely different dimension that traverses between coldness and kindness through this drama.

'Working Mom Killer' airs every Friday and Saturday at 9:50 PM.

Photo provided by: Broadcast screen capture.