User blog comment:KouChisato/The New Oldest Hello! Pro/@comment-31117173-20170328013138/@comment-131168-20170328080346

We've seen a leadership of under a year in Niigaki Risa, though if they're already announced to be leaving it might be more like C-ute's current situation. But in the case where all those people left I'd imagine it would be Ikuta. Time (not in training) usually trumps age, and she's got most of a year over 10th gen or S/mileage 2nd gen, and two years over any Juice=Juice.