Ikoma Rina's graduation concert will be held on April 22nd at Nippon Budokan. 

Back in January, Ikoma announced her graduation from Nogizaka46. More details regarding her graduation concert will be revealed via the group's official website. 

Nogizaka46 will release their new single "Synchronicity" on April 25. This will be Ikoma's last single before graduation. 

Source: natalie