1girl, armpits, belt, black_hair, blush, clothes_lift, denim, denim_shorts, grey_eyes, holding, holding_phone, idolmaster, idolmaster_shiny_colors, kazano_hiori, long_hair, looking_at_viewer, lying, navel, on_back, phone, reikakrzk, shade, shirt_lift, shorts, solo, tank_top, tatami, white_belt