Mina Ōba
On October 9, 2021, Ōba announced that she will graduate from SKE48 and leave the idol industry on April 2022, the time of her 30th birthday. Her 3-part graduation concert was on April 1 to 3 (the final day being her 30th birthday celebration). Her final theater performance was on April 23. She was supposed to officially graduate from the group on April 30, but she tested positive for COVID-19 on April 29, the day before her planned graduation. Her graduation date was postponed to May 21.