Jonishi passed NMB48's 1st generation auditions in September 2010. Her audition song was SCANDAL's Shunkan Sentimental.[1] Her debut was on October 9, 2010. In March 2011, she was selected to Team N.[2] Her first NMB48 Senbatsu was the single Zetsumetsu Kurokami Shōjo. Prior to joining NMB48, she has no experience in singing or dancing.[3]
On the 2013 general elections, Jonishi ranked for the first time, placing 40th with 17,381 votes.[citation needed]
In February 2014, during AKB48's Group Shuffle, Jonishi was appointed the vice-captain of Team N. In 2014, she ranked at 58th with 14,194 votes in the group's general elections. In 2015, she ranked at 36th with 21,135 votes in that.[citation needed]
On April 18, 2017, Jonishi graduated from the group's Team N.[citation needed]