I don't normally cry.
But i have had a very deep connection with the no game no life franchise. I had always loved the show and have seen it some good 5 times. But when I saw this movie, I cried. And it was such a kick in my nostalgia, and though the story was not that amazing, it connected so well with the show that i had to cry. Because, the continuity (though it's a prequel) is beyond mind-blowing for me.
I hope some others also love this film. This is easily in MY top 3.