1girl, armpits, buttons, collar, collarbone, exhausted, feathers, flower, frills, gradient_background, green_hair, grin, hair_between_eyes, hair_flower, hair_ornament, hitodattaniku, idolmaster, idolmaster_shiny_colors, looking_up, lying, nanakusa_nichika, on_back, outstretched_arms, short_hair, simple_background, smile, sweat, tears, uniform, upper_body, very_sweaty