A story of hidden emotions and desires unfolding between a private tutor and Yuri. Recently assigned as Yuri's tutor, he grows concerned about her behavior in daily life. During lessons, he finds himself constantly stirred by the graceful movements of her slender body. One day, she attends class without wearing any underwear, and with a bold smirk, asks him blunt questions like "Do you masturbate?" and "When was the last time you had sex?" Surprised and flustered by her words, the tutor is left speechless—until Yuri reveals a shocking secret from her past. As feelings begin to blossom between them, their concealed passion starts to unfold in intense ways.