1boy, 2girls, aged up, alternate costume, bag, beat shooter idolmaster, black hair, cardigan, cardigan around waist, clothes around waist, formal, from behind, full body, gyaru, kogal, looking at phone, loose socks, multiple girls, orange eyes, pants, pants under skirt, phone, pink cardigan, school bag, school uniform, selfie, simple background, socks, taking picture, track pants, two side up, v, wavy hair, white background