A 13-year-old boy with curly brown hair and vibrant blue eyes in a 3D render style, holding a glowing crystal. The crystal emits a bright light, creating a large, luminous portal in the middle of his room. The boy stands before the portal, ready to step through, with a look of determination and curiosity on his face. The room is dimly lit, highlighting the bright portal. --ar 16:9 --cref <https://s.mj.run/koFjL9henI4>