1girl 2015 armlet artist_name bad_id bad_pixiv_id belt black_dress black_thighhighs blue_eyes dress felicia-val headphones highres light_smile long_hair looking_at_viewer looking_back megurine_luka megurine_luka_(vocaloid4) pink_hair side_slit simple_background sleeveless sleeveless_dress solo thighhighs v4x very_long_hair vocaloid white_background