Beautiful girl Hikari Hoshino enters the filming set while still a virgin. She confesses to the crew that she has never experienced masturbation, causing an uproar on set due to her pure innocence. Under the camera, she undergoes sensitivity tests, is stimulated with toys and blowjob scenes, and ultimately performs her first-ever sex act. This debut work captures the tension unique to a first-time performer, contrasted with fleeting expressions of climax that highlight her charm. A deeply moving portrayal of Hikari's honest and innocent nature.