If you like a high school version of complex time travel drama then this may be for you. This is an idol drama, FL is played by Yeri who is member of famous Kpop group, Red velvet. ML is Hongseok, member of Pentagon.

Frankly the drama was carried on the shoulders of the FL who is one of the most adorable and likable person you may come across. In the drama she is full of life and goes to any length to save the ones she loves. Her acting and emotional range is quite impressive and can quickly and convincingly play a 17 or 27 years old. The ML was ok but could have been so much better as the balance between their emotions and acting was a bit off. The time jump technique was really just thrown as the randomest idea. It gets so complicated and frequent that you loose interest instead of caring for the out come.

Over all redeeming quality is a quick watch due to short episodes. Not much skin ship as they are just kids.