This was a nice drama from Jo won side he did everything he could and his character try his best
two problem two Other two characters

1st Physical assault toward ML was not punished because senior doctor is handsome, In korean Handsome people are give licence to do any crime the like
FL never shoot up against senior for treating ML unfairly because she has crush on him so she allow him to bully her fellow doctor, She did not feel disgusting by senior because he is handsome..

Two faced characterless Female Lead
FL know from start that her senior has a girlfriend but still stick to him as a backup plan for him, she doesn't have any self esteem,
two faced because she think she can accept clothes from her senior when he buys her but ask ML to return a single piece of cloth that his senior female bought him as thanks
i dislike FL character as much as i dislike SML
our SML brokeup with his girlfriend and then uses FL as he please without giving a single thought about her feelings at all
ML liked FL but from FL side i do not feel that she has same feeling for him, it look forced , it was Pity then love...
i think despite his medical condition he deserve a better girl, not a two faced who was trying to steal someone's boyfriend her whole life..