Most artists dream of longevity, but few are afforded significant time in the limelight. The paradox of all-girl group Morning Musume, 12 years since they began, is the enforced time-limit its members face in order for the group to remain forever young. Generation eight of the group, with nine members, is the longest-running incarnation so far, celebrating its two-year anniversary this month. Yet under the tutelage of producer Tsunku, “graduation” is likely never far away.