The OP ended its first week on
the charts at #7. That's great, and for a couple of faceless middle school girls, it is a total triumph. Sphere was a spot below them, and Sakamoto Maaya two spots above. They sold 14,000 copies of the single.
It's no surprise that ED4 is good. Hayami Saori has one of the most beautiful voices in the world, in my opinion. That is, for sheer beauty and musicality, if not for creating pop interest.