'Cleaning Up,' a new Saturday and Sunday drama on JTBC, is about a group of security business cleaners who are trying to forge a new path for themselves after hearing about insider trading. After Jeon So Min, Yum Jung Ah, and Kim Jae Hwa were confirmed as leads, Lee Moo Saeng and Na In Woo have been confirmed to join the cast.

Lee Moo Saeng, who has been dubbed "Lee Moo Saeng Laurent" and has been said "life itself is a masterpiece," plays Lee Young Shin, a mystery character. Shin, the young lady, is a woman's dream. Women's hearts can't help but fluctuate since he has everything they want, from romantic yet subtly sensual looks to compassionate remarks. He works as an informant for a law firm, but the mystery of not knowing what he does compounds the demonic nature he may possess.

Doyoung, a doctorate student who rented a house for Eo Yong Mi, is played by Na In Woo, who has grabbed the hearts of ladies with the brilliant and cute 'Dang Daeng Mi' and who is very active not only in dramas but also in entertainment programs (Yeom Jeong Ah). Doyoung is pure and full of nerdy beauty, with mechanical and electrical understanding and agility. Above all, he has a warm heart, and anyone who shares even a fraction of that warmth will warmly support Doyoung.