Abuse or neglect caused by parents/guardians

• Hello Monster - ML. Abuse and neglect.
• Healer - FL. Abused by her first adoptive parent.
• Sassy Go Go - SML. Abused.
• Moon Lovers: Scarlet Heart Ryeo - ML - Abused by his mother and by others (he was a political hostage) as a result of his parents' neglect.
• Crash Landing on You - FL. Neglect.
• The Legends - ML. I suppose you could say abuse and neglect. His father sealed a demon inside him, chained him up inside a mountain, and left to find a way to get rid of the demon but never returned.
• The Story of Ming Lan - FL's father neglected her and her father's other women (not her biological mother) and siblings abuse her. The ML's non-biological mother emotionally abuses and manipulates him.
• Come and Hug Me - The ML's father doesn't exactly directly abuse or neglect the ML, but his actions deeply emotionally scar the ML and the FL.
• It's Okay to Not Be Okay - The FL's mother emotionally abuses and manipulates her. The ML's mother is emotionally neglectful towards the ML in favour of his younger brother due to his special needs.
• Who Are You: School 2015 - The SML's father is emotionally neglectful and that pretty much shapes his personality.
• Weightlifting Fairy Kim Bok Joo - The ML's mother abandoned him.
• The K2 - The FL is neglected and essentially held hostage her whole life.
• City Hunter - The ML's guardian manipulated and used the ML, making him something like a child soldier.

In addition:

• Mars - FL was sexually assaulted by father (or stepfather) and that lead her to fear people and be such a loner
• Kill Me Heal Me - the MLs was exposes to the abuse done by his father that resulted in him having DID
• Go Ahead - bpth of the guysin the drama have abandonment issues but the  the mom of the ML not only abandoned the ML she also did some some psychological manipulation and obssessive controling acts on the ML that resulted with him having that depressive and loner state
• My Daughter Sooyoung - father was a drunkard/gambled who put their mother and twin siblings to much struggles that lead her to be walled up and deciding to cut off family ties.
• Kingyo Club - FL is neglected by mother that resulted in her being so introverted and subsequebtly being easy target by bullies
• Kleun Cheewit - FL is abandoned and neglected by mom, that has her have trust issues
• Ode to Joy - this is a 5 female centered drama, and the character named Andy was abandoned by her parents thus she has abandonement and trush issues and puts up walls
• 
  
• Secondary characters
  • Sassy Girl Go go - secondary ML
  • 1% of something (2003) - Secondary FL

• Go Ahead (ML by his mother, SML too)
• +1 It's Okay to not Be Okay (FL, both)
• Save Me (FL, both)
• My Name (FL)

At A Distance, Spring is Green - ML's father is abusive, mother is neglectful