Diana breaks the heart-cooler, and Da Da and others are frustrated. Young Gu wakes up at the lab and comes to see Da Da. Bo Won tells Young Gu about the broken heart-cooler and feels sorry for him. Young Gu tells Da Da that they should stay apart until they find the solution to his meltdown.
Cha Jung-won
Baek Kyu-Ri
Kwon Hyun-sang
Hwang In-Hyuk
Kong Jeong-hwan
Department Head Ko
Choi Seong-won
Nam Bo-Won
Hong Seo-young
Diana
Hong Jong-hyun
Ma Wang-Joon
Bang Min-ah
Uhm Da-Da
Yeo Jin-goo
Young Goo
Kim Do-hoon
Yoo-Jin
Ko Jung-min
Ran
Choi Joo-won
Hwa-Ni
Ha Jae-sook
Yeo Woong
Hong Seok-cheon
Geum Eun-Dong
