hakase fuyuki, hakase fuyuki (1st costume), nijisanji, absurdres, highres, 1girl, air bubble, black boots, black cardigan, black sweater, boots, breasts, bubble, cardigan, closed eyes, collared shirt, exercising, falling, flask, gloves, grey hair, hair between eyes, hair ornament, jacket, kotorime (kmizuq1), lab coat, large breasts, light blush, long hair, long sleeves, low twintails, neck ribbon, number hair ornament, open mouth, pantyhose, pi (math), red ribbon, ribbon, round-bottom flask, shirt, simple background, sinking, sit-up, skirt, smile, solo, star (symbol), sweater, twintails, upside-down, virtual youtuber, white gloves, white jacket