Even if it had a few TV lives, it wasn't that well received by Japanese public overall. Some people even said it's a bad copy of ORION.. Which is not obviously, unless you listened to it several times to get it's real beauty.
That said, the only tie in the single had was a CM and it was released a month after the single's release.
There's no real explaination for its weak sales, but I would say it's simply because the major public didn't like the song that much. ALWAYS was much more promoted and it a deeper feeling in it. It's about a feeling and it's somehow telling us a story.
I think this is what people liked in it.
