Kotani passed
NMB48's 1st generation auditions in September 2010. Her debut was on October 9, 2010. In March 2011, she was selected to Team N. She held a concurrent position with AKB48's Team A from August 2012 to April 2013, before holding another concurrent position in Team 4 from February 2014. In the 2014 general elections, Kotani ranked for the first time, placing 61st with 12,913 votes. Kotani's height on her official profile is 149 cm, but she is actually 147 cm. Her future dream is to be someone who appears frequently on variety shows, commercials and information programmes. On March 26, 2015, it was announced that she would be released from her concurrent position in AKB48. On February 4, 2016, Kotani graduated from NMB48 Team N and changed her stage name to . On August 20, 2018, she became a starting member of the
Sakamichi Series idol group
Yoshimotozaka46. On March 23, 2020, Miaki announced her engagement to fellow Yoshimotozaka46 member and departure from
Yoshimoto Kogyo, her office at the time. She officially graduated from Yoshimotozaka46 on March 31, 2020. On June 20, 2020, she opened her
YouTube channel. On November 1, 2020, she married SHUN SHUN CLINIC P, 7 months after the engagement announcement. On February 2, 2022, she announced her first pregnancy. On July 6, she gave birth to a baby girl. ==Discography==