Premise: "Hana no Na" (花の名 ) is the thirteenth single by Bump of Chicken, released on October 24, 2007. The title track is from the album "Orbital Period". The single peaked at #1 on the Oricon Weekly Charts in front of "Mayday" (メーデー ) , which was released on the same day.
Hypothesis: There were many albums released in Oct 2007