:d armpits black_hair breasts collarbone d-pad d-pad_hair_ornament groin hair_between_eyes hair_ornament hair_ribbon long_hair looking_at_viewer medium_breasts multiple_girls naked_sheet navel neptune_(choujigen_game_neptune) neptune_(series) noire official_art open_mouth purple_eyes purple_hair red_eyes ribbon short_hair small_breasts smile thighs tsunako twintails upside-down very_long_hair