《Warm up first.》Cast

Actively up four times young girls, who do not care about dirty people, suddenly decided to go to work in a clean company.

Kim Yoo-jung (Hangul: 김유정; Hanja: 金裕貞; born September 22, 1999) is a South Korean actress. After her acting debut in 2003, she became one of the best known child actresses in Korea and since then, has transitioned into teen roles by starring in television series Moon Embracing the Sun (2012), May Queen (2012) and Angry Mom (2015). She hosted music show Inkigayo from November 2014 to April 2016 and took on her first adult leading role in KBS2's historical drama Love in the Moonlight (2016).

The CEO of the cleaning company

Ahn Hyo-seop (born April 17, 1995) is a South Korean actor and singer. He is a member of South Korean actor boy band One o One.

Unemployed people living in Ji WuXue house housing

Song Jae-rim (Hangul: 송재림; born February 18, 1985) is a South Korean actor and model. He began his career as a runway model for the Seoul collections of Juun. J, Herin Homme and Ha Sang Beg. He has also appeared in the magazines Bazaar Korea, Vogue Girl Korea, Dazed & Confused Korea, Nylon Korea, GQ Korea, Arena Homme + Korea, Esquire Korea, and Marie Claire Korea.