Okay, for me..
it would be Taiwanese Drama: Meteor Garden, honestly..
that was my very first Asian drama series that i watched
then just recently i found out the story was originally from a Manga
& saw the different versions such as
the Korean version: Boys Over Flowers
& the Japanese version: Hana Yori Dango
but of course the first was Meteor Garden that aired
throughout Asia !
& their cast of F4 were total heart throbs heart