Can you guys recommend a drama where you'd want the male lead to end up with the 2nd lead. I'm currently watching The Emperor: Ruler of the Mask and I've noticed that a lot of fans wanted the Crown Prince to end up with Hwa Gun and I'm not hesitant to say that I'm part of the crowd. Don't get me wrong, I only watched the drama because I'm a huge fan of Yoo Seungho and Kim So Hyun but Hwagun's character is just so lovable. 

Many thanks in advance.

Me too! I rooted for her since the beginning she met the Crown Prince.

Other dramas that I rooted for the second female leads:

Producers - Cindy! 

Doctor Stranger - Neutral on this, but it wouldn't have hurt the drama if she ended up with the male lead. 

School 2015 - Second female lead had better chemistry with the guy. 

The Royal Gambler - Didn't really like the drama, but it was worth seeing if the second female lead ended up with the male lead.