Rule 34 Dev - 1girl bemani blunt_bangs chaki_(chakan) denim denim_skirt earmuffs feet_out_of_frame greyscale_with_colored_background long_hair long_sleeves looking_at_viewer musical_note open_mouth own_hands_together pink_background polka_dot polka_dot_background pop'n_music rie-chan skirt solo|23548352373