Let me start this review by correcting the term "strict" From the synopsis to "abusive" . Yes that grandma is some real psychopath.
This drama tells the story about a girl with split personality disorder. The switch between the scared obedient girl to scary objectionable girl was the most intriguing part. You can watch this drama for that because it's quite convincing. Since romance isn't the main plot, there isn't much of a love story but two fairly likable male leads with important parts to play in fl's story. Yumi want revenge and hiromi want to hide from reality. The clash was very interesting. I would have rated it higher if the ending was not this abrupt. Some questions were left unanswered.
Anyways its short and fun. Give it a try. Happy drama watching:)