While Angry Mom and God's Gift - 14 Days don't sound similar in synopsis, the feel of these dramas is very similar. Both of them have a plot that delves into corruption and how it trickles down into society and has an effect on everyone. With both dramas, you get the feeling that there is a lot happening behind the scenes. Also, both feature a mother having to resort to desperate measures to protect her daughter.
Both dramas involve the suicide/possible murder of a high school student and work to unveil school corruption. Angry Mom is lead more by the adults while Solomon's Perjury is lead by a group of students. Angry Mom is a bit darker than Solomon's Perjury, but both have some humor and romance in them.
Different plots on the whole, but I feel like both sort of tell the story of a person that was backed into a corner and how she tries to fight her way out. Also, both dramas deal with both very evil characters and those with shades of gray. Both are on the darker side (AM is Def darkerr) with specks of humor. Finally, both have story that really sucks you in.