Rule 34 Dev - 1girl 2others aquarium backpack bag baseball_cap black_shirt blue_eyes child commentary grey_hair hand_in_pocket hat highres hood hoodie idolmaster idolmaster_shiny_colors indoors jellyfish jewelry looking_back looking_up multiple_others necklace purple_theme serizawa_asahi shirt short_hair upper_body window zhili_xingzou|20949749847