This is a nice little costume mini-show. The storyline is quite simple but there are a few twists and turns along the way, making it interesting.
Character wise:
FL is a sweet and gentle Princess that is haunted by the death of her grandfather. Her biggest wish is to find out why and who was behind it.
ML is a fierce and strong Regent that hides a secret not many could imagine.
2ML is the vain and insecure Emperor and brother of FL.
Acting wise this isn’t exactly top shelf but the actors do a good job within the limited timeframe.
So, if you like a short and simple costume drama - with a nice love story - this is worth watching.