Sayumi Michishige
She would graduate from Morning Musume and Hello! Project on the last day of their Spring Concert Tour, May 18, at Nippon Budokan. Niigaki was the fourth Morning Musume member to graduate at the Budokan. On May 18, 2012, Niigaki graduated from Morning Musume and Hello! Project alongside Aika Mitsui. She handed down her position as leader of Morning Musume to Sayumi Michishige.