A highly detailed 3D cartoon boy standing near a window, rendered in ultra-realistic Pixar-style. The boy has messy, spiky dark hair, large round wooden-frame glasses, big expressive eyes, and a round red nose. He has a full black beard and mustache with soft, realistic hair texture. He is wearing a yellow textured hoodie with red lettering, layered with a red-and-yellow plaid flannel jacket. He has a blue backpack and blue denim jeans. Soft natural light from the window illuminates his face, creating gentle shadows. Warm color tones, depth of field bokeh background, extremely detailed textures on clothing, hair, and glasses. Perfect for a vertical mobile wallpaper, 9:16 ratio, crisp, vibrant, adorable character design