To be honest I've watched it bc I saw one of the main actors is a member of EXO so that's what pushed me to watch it without reading the description or any reviews..
First of all prepare a packet of tissues because a lot of tears will be with you during watching it.
The story is nice "as a concept you might have seen it in other movies" but the plot was so good and shows the family bondings are there even after separation for several years without saying hi. It shows that disability will never prevent anyone from reaching your dream whether it was physical, social or financial, you'll reach your dream but you have to work on reaching it.
The cast was amazing as I mentioned EXO member "Do Kyung Soo" was the main reason to watch the movie and he didn't make me feel down, I was really surprised about how good actor he is. His brother "Jo Jung Suk" was good as well he managed to make me laugh at some scenes.
The ending is expected but it was suitable to the plot in my opinion it have mixed feelings of being super happy and super sad at the same time.
The music was not that noticeable during the movie but the ending is so good especially the two main characters yes Jo Jung Suk and Do Kyung Soo are the voices you'll hear at the ending and I'm sure you'll love it
At the end the movie is nice and it's definitely recommended, not a movie you'll easily forget.