Infinite's Hoya was amazing in Reply 1997 (as well as A-Pink's Eunji) and Mask. He's one of the best acting idols, imho.
And I really really like B1A4's Jinyoung.
I hate the bitchy second female lead. I'm tired of the fact that the second male lead is almost always nice and the second female lead is always super evil. At least it seems that in recent dramas the second female lead character is becoming a little more complex, but I hate it when they sell the idea that women are always bitchy to other women when it comes to seducing a man. I HATE it.
I'm so glad you included Team Leader Oh from Time between dog and wolf! That character caught my attention when I first watched the series, even if it is a supporting role.
I think you should watch more sageuks. I have the feeling that there are further interesting female characters in sageuks than in regular dramas. Damo is a good example. Ha ji Won was absolutely AMAZING in it.
Oh, and then there's Lee Bo Young's character in I hear your voice, Shin Min Ah's in Oh my Venus (even though I think it's an irregular drama), Uhm Jung Hwa's in Witch's Romance, again, Ha Ji Won's in Secret Garden or, one of my favourites, Jung Eun Ji's character in Reply 1997.
And I really really like B1A4's Jinyoung.
I think you should watch more sageuks. I have the feeling that there are further interesting female characters in sageuks than in regular dramas. Damo is a good example. Ha ji Won was absolutely AMAZING in it.
Oh, and then there's Lee Bo Young's character in I hear your voice, Shin Min Ah's in Oh my Venus (even though I think it's an irregular drama), Uhm Jung Hwa's in Witch's Romance, again, Ha Ji Won's in Secret Garden or, one of my favourites, Jung Eun Ji's character in Reply 1997.