Xu Ke (played by Wen Qi) is a protagonist in It's OK.
Hu Chunrong (played by Qin Hailu) appears in It's OK.
Doctor (played by White-K) appears in It's OK.
Landlady (played by Niu Li) appears in It's OK.
Doctor (played by Liu Jia) appears in It's OK.
Editor (played by Li Xueqin) appears in It's OK.
Waiter (played by Li Zheting) appears in It's OK.
Singer (played by Huang Shaofeng) appears in It's OK.