Yuna Shina performing in Private Tutor Babes - I'll Teach You Gently Yuna Shina Mikuni Maisaki Miki Sunohara. (55t2800304, T28-304). This movie is about Private Tutor, Older Sister, Cowgirl: VIDEO ON DEMAND: ADULT MOVIES. This movie was released in Japan on Mar. 08, 2013. Movie duration is 115 min.