Donghae and Yoona have been a couple for two years now. Yoona want Donghae to meet her brother Heechul, who lives in America but came to Seoul to visit Yoona. Heechul is a very smart and curiouse man who is very overprotective when it come to he younger sister Yoona. Will Heechul accept Donghae? 

Characters:

Lee Donghae

- Kind and gentle

Im Yoona

- Kind and sweet

Im Heechul

- Cool and caring

And more