I read the reviews of this drama but I was still surprised by how good it was.
The story is good. The only reason I deducted half a point is because we never get to know the reason behind the reset.
The acting is also very good. The elder actors are especially impressive but the younger ones don't lose out. Some moments really hit home in a powerful way. The production team did a good job of casting and the costumes were realistic unlike most idol dramas of the same genre.
The music is good. Subtle but very fitting for the drama.
Overall, I recommend this drama.