When We Were Young (2017)

It's the original Korean version of the show. Both female actresses have to play the roles of two different people since she is playing twins.

Similar Plot - long lost sisters - the sister switching lives - school life w/ little bit of romance involved

When We Were Young is a chinese remake version of Korean's Who Are You. So you can try watch this if you like to watch chinese drama. Of course, chinese drama usually tend to prolong their story. This one is too. It have 32 episodes so it a bit long and more detail but if you dont mind about it and want to watch every remake versions of School 2015:Who Are You, then you need to watch this one too!

I haven't watched this drama, but the plot sounds exactly like the plot to Ugly Beauty, except outside the film industry/ celebrity world.

1.twin sisters 2.one is intelligent top student and the other has a bubbly personality. 3.lead gets confused by the identity. 4.twins swap their places because of an accident. 4 .There Is a guy that already liked the intelligent twin sister before the swap . Many similarities ..............

similar ideas with twins that switch lives but only one of them are aware due to different reasons. long lost twins. some romance in both but with different plots.

Twins ...exchange identities to solve the mystery and romance ....I haven’t watched When we were young ...but the synopsis sounds like this Thai drama which I watched recently...and from the trailer of Wwwy ...in acting part who are you :school 2015 ( Korean)and Khun make Sumatra Roy ( Thai) looks much better