I got to say that I love your reaction. It is almost identical to the reaction I had when I first heard it. I am really impressed with them and I am especially impressed with the fact that they wrote a song about their love for their fans and about how much they think of their fans. After that I was hooked on Babymetal and now and part of the one!
Bro, you got no reason to apologise for loving this song as much as you do. It's a love letter to the fans, so it's meant to strike a chord in your heart.