Kaori Matsumura

[5] On 6 June 2012 the fourth AKB48 general election event was held at the Nippon Budokan indoor arena and was used to determine members who would partake in AKB48's 27th single (Gingham Check) via fan voting.

[6] Matsumura was able to obtain 9030 votes placing her 34th and able to participate in a B-side song for the group of members ranked 33rd to 48th collectively called "Next girls".

[8] Matsumura included as one of her submissions the only video display for an art exhibition held between 15 June to the 8th of July 2012 showcasing works from various 48 Group members.

[12] On 24 February 2014, Matsumura received the title of AKB48 Group Kenkyuusei Student Council President (AKB48グループ研究生生徒会会長) at an event rearranging different members from AKB48, SKE48, NMB48, HKT48, and Nogizaka46 into different teams at a concert held at the Zepp DiverCity venue.

[citation needed] On 26 October 2014, she attended the Yamada town Seafood Tasting Festival (山田の幸　味わい祭り) in Iwate Prefecture where she was appointed the hometown ambassador in a ceremony.

On 28 June 2020, Matsumura announced her marriage to a non-celebrity,[19] though the wedding ceremony was not held until September 2022, due to delays brought upon by the COVID-19 pandemic.