Miyuki has shared the center position on a few NMB singles but she'll have that position all to her self on their next single "Boku wa Inai" which comes out on August 3rd. Not sure of the exact graduation date, there were some concerts last week for it but have heard they'll also be a few at their theater in late August.
There's only been a few members who I've hated to see leave, Miyuki is definitely one of them as she's #1 of all current '48' family members as far as looks go. No clue yet on what her future plans will be, most who leave say they want to be actresses but haven't heard what her plans will be yet. What surprises me is the lack of mag spreads promoting this PB, there was one small one but usually there's quite a few. Will keep my eyes open for any as no one tops her spreads, not much more to add in as how many more ways are there to describe perfection