As an actress, she has played roles in numerous films and television series, including Kamen Rider Build the Movie: Be the One and the 99th NHK asadora Manpuku.

[7][8] In the AKB48 Group Daisokaku Matsuri, held February 24, 2014, she became a member of Nogizaka46 while remaining in SKE48's Team E.[9] She made her debut as a member of Nogizaka46 during the group's handshake event for their single "Kizuitara Katamoi" at the Makuhari Messe convention center in Chiba on April 13, 2014.

On March 26, 2015, during a concert at Saitama Super Arena, it was announced that her concurrent position in Nogizaka46 would be cancelled.

Since graduating from SKE48, Matsui has worked as an actress in several TV series and films, including Kamen Rider Build the Movie: Be the One and the ninety-ninth NHK asadora Manpuku.

[21] On January 3, 2024, Matsui and singer-songwriter Akihisa Kondo jointly announced through their respective social media accounts that they had officially married.