Truly amazing!!!! I fell in love with the series in the very first episode. All the roles were just too good. The main lead couple didn't seem too difficult in the beginning, but as the drama goes on, ups and downs start. I especially loved the part when Kang Bok Soo's secret(s) gets revealed and yet his classmates, who are younger than him, support him so gracefully and adorably. If you are such a kind of soft person who loves happy endings- no matter what happens in the drama, then this drama is definitely for you. It gives a really detailed ending, showing how each character goes on with their own lives is just so satisfying (at least to me). I bet you'll fall in love with all the students and ofc the main leads by the end of the drama.
Its too good. If you love romantic comedies, with only some suspense and too much fun and adorable storyline, and ofc with a sweet happy ending, go watch it right away!!