Okay,
Male lead is tsundere (arrogant/mean-ish/jerk-ish/playboy but does have a soft spot just doesn't show it but only show to those he love) and he began to like female lead or already likes her but Female lead doesn't like him (could be due to she likes second male lead or not anything is fine) So it takes time for female lead to like male lead and male lead should be interested first.
Female lead is headstrong who speaks her mind and stand up for herself and isn't annoying and weak.
So, Tsundere male lead likes Female lead but she doesn't and takes time to like him. i don't mind love triangle between them or other
(Note: She needs to take time and like him very slowly)
Any country is fine and can watch from any country.
For examples
Boys over flower and it's versions
Secret garden
The greatest love
One percent of something.
