My Sweet Mobster

Han Sun-hwa as Go Eun-ha

Um Tae-goo as Seo Ji-hwan

Nandito Hidayattullah Putra as Nandito

Moon Ji-In as Koo Mi Ho [Eun Ha's best friend], Koo Mi Ho

Nam-Yong Seo as Yoon Hyun Woo

Kim Roe-ha as Seo Tae Pyeong [Ji Hwan's father], Seo Tae-pyeong (Ji-hwan's father)

Moon Dong-hyeok as Yang Hong-Ki

Kwon Yul as Seo Hyeon-woo, Seo Hyeon-U

Lee Yoo-Joon as Jung Man Ho, Jung Man Ho [Thirsty Deer product development team leader]

Yang Hyun-min as Kwak Jae-soo, Kwak Jae-soo [Thirsty Deer Customer Management]

Im Chul-soo as Go Yang Hui [Meow group boss]

Kim Hyun-jin as Joo Il-yeong, Joo Il-yeong [Thirsty Deer General Manager]

Park Jae-chan as Dong-hee, Lee Dong-hee [Thirsty Deer CEOs Secretary]

Shin Soo-hyun as Officer Song