i think he was staying late just for this particular case they were working on , but maybe i am wrong
heyy even if he stayed overtime it was not that late tho..SH has strict rules abt work duration time in most places it ends around 6-7pm so even if he stays overtime he will come home around 8pm
I swear if fl does not fall for mr park I am gonna go insane..She is already so annoying..Its been 7 eps she is still acting weird..Its not funny at all even Mr park acts like young man instead of old Grandpa