1girl, 3boys, ahoge, akizuki ryo, book, brown eyes, brown hair, female child, finger to mouth, fingernails, glasses, globe, green shirt, hood, hoodie, idolmaster, idolmaster side-m, idolmaster side-m growing stars, library, light bulb, male child, male focus, multiple boys, official art, open mouth, pink shirt, plant, pointing, print shirt, red hoodie, shirt, short sleeves, smile, stairs, teeth, third-party source, upper teeth only, watch, wristwatch