Heads up: This is the first time I have ever given a 10/10 on any anime. Ever.
This movie is a masterpiece and needs to be watched by more people. I was at first hesitant when my friend asked me to watch it, but when I started, I couldn't stop. The main characters were actually realistic, and the music was really good.
I really enjoyed the anime because it was very unique. There was comedy, sadness, romance, and others all mixed together. Normally, this would be a bit strange if not executed well, but Kimi No Na Wa did it well. The entire was a rollercoaster of emotions, and was really fun, and sad to watch. Mitsuha..
Tl;dr watch the anime, you won't regret it.