1girl, amagai ruka, silver hair with blue streaks, long wavy hair with side braid, blue ear-muff-style hair accessory, blue eyes, sportswear, tank top, short pants, plank pose, forearm plank, yoga mat on floor, light exercise, focused expression, calm expression, steady breathing, small determined smile, sweat drops, night time, bedroom, dim lighting, water bottle nearby, stopwatch on floor, slender build, wistful yet gently smiling, indoor, detailed background
