A year later, she also won the semi-grand prix award for reader model of the magazine Shogaku gonensei (小学五年生).

In July, 2013, Yamaguchi made acting debut on the TV drama Ashita no Hikari wo Tsukame -2013 Natsu-.

In December, 2014, she graduated from Pichi Lemon, appearing for the last time as an exclusive model of the magazine in the January 2015 issue.

[4] On December 22, 2019, with the announcement of E-girls' disbandment set for around the end of 2020, it was revealed that Yamaguchi would focus on acting and modeling activities afterwards.

She starred as Kae Serinuma, a fujoshi that suddenly gets the attention of four popular boys in her high school.