Actors and Actresses who I want to star in 1 drama together

I know this will never exist but in case it does, oh well. 

Genre: Sentimental, Emotional, Romantic, Melodrama, Heartfelt

 Story: idk but probably something like Uncontrollably Fond or One Spring Night? With a sad or bittersweet ending? Or a normal girl / normal boy (Not rich and not poor) Or filmed abroad? In Switzerland or Sweden? 

I don't know if the casting is creative or anything... Park Seo Joon, Park Yoo Na, Gong Yoo, and Bae Suzy will be playing lead roles-