2girls, arm_support, bad_pixiv_id, blush, breasts, camisole, cleavage, collarbone, crop_top, dolphin_shorts, idolmaster, idolmaster_shiny_colors, lap_pillow, looking_at_another, lying, mayuzumi_fuyuko, medium_breasts, midriff, multiple_girls, navel, on_back, on_floor, pink_shorts, serizawa_asahi, shirt, shorts, sitting, small_breasts, smile, sora_(men0105), white_camisole, white_shirt, wooden_floor