Kim Seung-wook

Seung-wook

Han Seol-hwa

So-yoon

Heo Yoon-joo

Il-hong

Kim Sang-cheol-I

Joon-gi

Lim Hyeong-soon

Se-joon

Moon Yoo-seong

Yang-woo

Kim Hye-jin

Se-kyung [Yang-woo's Girlfriend]

Min Joon

[Building Man]

Lee Yoo-hee

[Building Woman]