mame, boku no himitsu taiken, game cg, variant set, 1990s (style), 1girl, bare shoulders, black background, bow, breasts, collarbone, covered erect nipples, curtained hair, dress, hair bow, hand on own chest, large breasts, long hair, looking to the side, low twintails, nonaka yoshiko (boku no himitsu taiken), off shoulder, open mouth, parted bangs, pink bow, pink dress, purple eyes, purple hair, raised inner eyebrows, retro artstyle, short sleeves, simple background, solo, tachi-e, tareme, twintails, upper body, very long hair