katsuragi lilja, shiun sumika, gakuen idolmaster, idolmaster, 2girls, between legs, black socks, blue background, blue skirt, blush, closed mouth, clothes around waist, collared shirt, flying sweatdrops, hand on another's shoulder, heart, hug, long hair, long sleeves, multiple girls, orange hair, plaid clothes, plaid skirt, pleated skirt, sakemayo 2509, school uniform, shirt, short hair, skirt, sleeves rolled up, socks, spoken heart, sweater, sweater around waist, two-tone background, white background, white hair, white shirt, yuri