CD introduction

In 2007, Morning Musume。 It was the 10th year since the formation of Morning Musume。 Various events took place during the year, including the leader's graduation announcement, new members joining the group, new members joining from overseas, new units including Morning Musume OG, departures, and marriages. From the latter half of the year, we entered the “Platinum Period” as it is known in the Halo Pro community.