Korean Dramas with loner/outcast female lead

• Heart To Heart
• Flowers For My Life
• Flower Boy Next Door
• Mad For Each Other
• Chocolate
• 49 Days
• Fated to Love You
• 
  

These ones have a similar vibe to My Mister:

• Call It Love (I found this one quite similar)
• My Liberation Notes (this one is similar too!)

These ones have a "loner" FL, but aren't so similar to My Mister:

• Tomorrow (this one's similar in the sense that she doesn't talk much about herself)
• Angel's Last Mission: Love (she has a pretty nasty temper)
• Do You Like Brahms? (doesn't really have friends)
• Mad for Each Other (she seems a little crazy)
• My Name (this one's more about revenge + action)