On October 3, former Nogizaka46 member Hatanaka Seira updated her Twitter account announcing the birth of her second child.
Hatanaka wrote, "I safely gave birth to a big and healthy baby boy. He is a really good baby. Thank you for growing healthily inside of mommy without any problems over the past 10 months and for being born safely. It's nice to meet you."
Hatanaka graduated from Nogizaka46 in April of 2015. In January of 2018, she had announced that she had gotten married in 2017. She gave birth to her first child, a daughter, in June of 2019.