A normal female college student named Haruna agreed to appear in an adult video on the condition that she wears a mask. Despite her youthful, innocent face, she reveals an unexpectedly beautiful F-cup bust when she undresses. During the interview, she claimed to have no prior sexual experience, but once filming began, she quickly fell under the spell of the male actor's techniques, gradually exposing her deeply erotic true nature. In this one-and-only shoot held at a hotel in central Tokyo, gonzo-style sex scenes and lotion play progressively unveil her hidden, sensual side—perhaps even surprising herself, as no one would expect such a regular girl to be this horny.