Nine HKT48 idols ( Ichimura Airi, Jitoue Nene, Matsumoto Hinata, Miyazaki Sono, Kuriyama Rina, Sakamoto Erena, Akiyoshi Yuka, Aramaki Misaki and Seki Ai) took part in the coming-of-age ceremony (seijin shiki) on 11 January 2021 at Kushida Shrine, Fukuoka.
