May not be the first adaptation of the drama but certainly the most faithful to the original plot. I was able to watch the other drama adaptations but of course if you really want to stick with the original plot I'd say go for this japanese drama adaptation. It stays true on the original story and the actors were able to portray their characters well. As expected Jun Matsumoto and Inoue Mao were perfectly cast for their roles and they did justice to the character as well as the other actors. I love the music of the drama aside from I'm biased of Arashi music, it fits the drama well. I could definitely re-watch it again since it's not that long and it's story never gets old. One of the classic dramas you need to try to watch out for.