[12] In August, Matsui served as the choreography center for SKE48's debut single "Tsuyoki Mono yo" then continued to hold that position until "Mae Nomeri" in 2015.
[19] At the next rock-paper-scissors tournament in 2013, Matsui came out as the winner after beating a total of 83 members which earned her the center position for the group's 34th single, "Kimi no Hohoemi wo Yume ni Miru".
[34] Because of her long hiatus, Matsui was unable to participate in the recording of the song and music video of her winning single "Sentimental Train".
The release of the album was proposed by AKB48 Group's producer Yasushi Akimoto after witnessing how Matsui's sensitive lyrics and singing voice grabbed fans through her live streams on Showroom.
Her graduation concert was scheduled to be held at the Nippon Gaishi Hall on September 26–27 and her farewell performance on October 5 at SKE48 theater,[37] which were eventually postponed due to the COVID-19 pandemic in Japan.
[38] In commemoration of her upcoming graduation, SKE48 and Chukyo TV launched a paid virtual exhibition titled "Jurina's Share Room" which features more than 100 pieces of content taken from her 12 years of career.
It marked SKE48's 23rd wins on the chart, making the group the fifth female artist who has the most number one positions in the history behind AKB48, Ayumi Hamasaki, Seiko Matsuda, and Nogizaka46.
[45] On April 11, 2021, Matsui's graduation concert was held at the Nippon Gaishi Hall and consisted of two shows - day and night - with two different setlists, with an audience less than 50% of the venue's capacity.
[48] The daytime show featured Pro Wrestling Noah's fighters, Naomichi Marufuji, Kaito Kiyomiya, Yo-Hey, and Yoshiki Inamura, as well as performance of several songs originally sung by Matsui's AKB48 senior members.
[58] In January 2014, Matsui played as a new secretary to Koichi Sato's character in a special broadcast of the mystery television drama Kagi no Kakatta Heya.
[63] In July, Matsui cast in her first non-AKB48 Group leading role in the midnight horror drama Death Cash broadcast on TBS.
She played the role of Yuka Manami, a college student who was seeking the truth behind a mysterious case involving cursed 10,000 yen cash.
[65] On October 2, Matsui announced she would transfer her agency from AKS to Irving to improve her activities in the entertainment world, including acting.
[66] In 2019, Matsui made her acting comeback by guest-starring in TV Asahi's crime drama Emergency Interrogation Room alongside Yūki Amami.
Written and directed by Maruo Maruichirō, the stage play is the culmination of acting challenges SKE48 members received from specialists on their variety TV show SKEBINGO!.
[71] As a solo artist, Matsui starred in TV commercials for part-time job search app Baitoru alongside her mother in 2015.
[7] In 2017, Matsui was appointed as the official ambassador of the Star Wars exhibition at Nagoya Castle that was held from February 16 to April 9.
[72][73] With agency-mate and actress Manami Hashimoto, Matsui has promoted products for online casino game Mystino and real estate company Aoyama Mainland.
In September 2019, Matsui was appointed as an official supporter of combat sport event ONE Championship: Century held in Tokyo.
[82] In October 2020, Matsui attended the lighting ceremony for Saga Horse Racetrack's night game as one of special judges in the naming of the event.
[87] During the first live streaming on November 1, Matsui chose "Jurina House" as the name for the channel out of approximately 80 suggestions received from Japanese and overseas fans.
[88] Matsui's placements in AKB48's general election, an annual event to decide the promotional lineup or senbatsu (選抜総) of the group's single.