Director
Screenwriter
Main Role
- Oh Jung Se{Room 609} Oh Do ShiMain Role
- Ryu Hyun Kyung{Room 609} Ryu Du RiMain Role
- Jung Joon Young{Room 610} Jeong Yeong JunMain Role
- Choi Yeo Jin{Room 610} "Man Goo" Choi Jin NyeoMain Role
- Lee Jae Joon{Room 709} Lee Jun JaeMain Role
- Terada Takuya{Room 709} TakuyaMain Role
- Park Jong Hwan{Room 501} Park Hwan JongMain Role
- Ha Eun Seol{Room 501} Ha Seol EunMain Role
Support Role
- Sung Gyu ChanSeong Min Jae [Apartment manager]Support Role
- Yang Hee MyungHee MyungSupport Role
Guest Role
- Kang Kyun SungRyu Sung Kyun [Du Ri's younger brother] (Ep. 1, 6)Guest Role
- Park Hye Jin[Hwan Jong's mother] (Ep. 4)Guest Role
- Kim Boo Sun[Herself] [Yeong Jun's side chick] (Ep. 4)Guest Role
- Raccoon[Himself / Yeong Jun's bandmate] (Ep. 4)Guest Role
- Victim[Himself / Yeong Jun's bandmate] (Ep. 4)Guest Role
- Giant[Himself / Yeong Jun's bandmate] (Ep. 4)Guest Role
- Kim Poong[Himself/ Jin Nyeo's friend] (Ep. 4-5)Guest Role
- Han Da Ra[Herself / Takuya's friend] (Ep. 6)Guest Role
- Kim Jae Heung[Himself / Yeong Jun's friend] (Ep. 6)Guest Role
- Kim Hyun Woo[Himself / Yeong Jun's friend] (Ep. 6)Guest Role
- Bae Woo Hee[Herself / Ryu Seong Gyun's girlfriend] (Ep. 6)Guest Role
- Jo Eun JiJo Shin [Do Shi's ex-girlfriend] (Ep. 7)Guest Role
- Kim Kyung Jin[Yeong Jun's manager] (Ep. 10)Guest Role
Unknown
- Choi Hyun Seo Unknown
- Kim Min Shik Unknown
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