Drama with a grumpy character turns soft?

Some of these are more cold than grumpy, but they melt a lot over the drama:

• Make a Wish (ML)
• The Life of the White Fox (ML)
• The Starry Love (ML)
• Warm on a Cold Night (ML)
• Koi wa Tsuzuku yo Doko Made mo (ML)
• Renai Mangaka (ML)

• My Demon (kdrama - ML)
• Till the End of the Moon (cdrama - ML)
• Black (kdrama - ML)
• Love Between Fairy and Devil (cdrama - ML)
• Semantic Error (kdrama - ML)
• Good Manager (kdrama - SML)
• Come and Hug Me  (kdrama - Yoon Hyun Moo, one of the best characters developments I have seen!)
• Love for Love's Sake (kdrama - ML)
• Ousama ni Sasagu Kusuriyubi (jdrama - ML)
• Just Between Lovers  (kdrama - ML)
• Nigeru wa Haji da ga Yaku ni Tatsu  (jdrama - ML, not really grumpy but just very straightlaced)

Love Like The Galaxy (ML and FL also played in the long Ballad), 

crash landing on you (ML), 

F4 Thailand Begins (ML)

Hotel Del Luna (IU, ML)

mr. Queen (ML)

story of yanxi palace (FL)