Honestly, the reason I watched this move was because Lee Know from Stray Kids mentioned in an interview it was good. I can't disagree. Althought the flow of time was hard to grasp most of the time, especially at the beginning, through the end it kinda made more sense and it was a bit easier to understand as I saw Emi's point of view.
The couple's love story was beautiful nonetheless and very sweet, but also sad as it made me think everything that happened was all in a period of just 1 month as for what I understood they could only meet for 30 days every 5 years.
I guess you just have to watch it a few more times to fully understand the time lines, but all in all I enjoied it.