SKE48's Oba Mina has announced that she will graduate from the group in April of next year.

This announcement was made on the October 9th broadcast of Tokai Radio's 'SKE48 1+1+1 wa 3 Janai yo!' On her graduation, Oba commented, "I decided to graduate from being an idol when I celebrate my 30th birthday next April. Joining AKB48 as a high schooler, and transferring to SKE48, I believe I have completed my 13 years of idol life."  

Oba joined AKB48 as its ninth generation member in 2009. She was once the captain of Team 4, then transferred to SKE48 Team KII in 2014. The following year, she became the team's captain and has been leading the group.