Maria Nagai ( born December 18 , 1996 ) is a Japanese AV actress from Aichi Prefecture . She was previously affiliated with Prime Agency and Magito. She made her AV debut after graduating from high school, and has appeared under a number of stage names, including Kashiwagi Kurumi. After taking a break, she returned to AV acting under the stage name "Nagai Maria." During her hiatus, she discovered training, and in 2017 she was a finalist in the hip category of a fitness competition