The show really had me at the first half when we went through the school lives with the leads where scenes were heartwarming and cheerful. As someone who doesn't really enjoy an entire high school series, I was ready to drop it... until the second half came and they focussed on the time-travelling aspect. The second-half episodes were all very tear jerking and I shed tears EVERY SINGLE EPISODE for the last 8 eps. I truly felt the longing that both leads felt for each other that it makes my heart ache. Overall, I felt that the first half of the drama was a typical school drama with a few aspects of mystery as it slowly unfolds the truth behind zhang wansen's accident. The second-half felt more emotional, similar to what "Someday or One Day" felt to me but slightly more toned down.

- Story: Pace was great and it helps that there's only 24 30mins-45mins episodes. I also liked how smoothly they transition between the present and future. Every single episode had its purpose and there were no filler episodes in my opinion.
- Acting: The leads' chemistry was great but felt that the second lead couple didn't have chemistry and had slightly awkward acting but it didn't bother me that much since I usually skip their scenes LOL
- Music: 10/10 for me! The music fits the scenes very well and the meaning of the songs are also very accurate to the scenes. Super touching.

Recommended if you are looking for a light-hearted but emotional drama (ironic but it's really a mixture of both as explained above HAHHA)