请高手帮我看一下这段话有语法错误吗

请高手帮我看一下这段话有语法错误吗
Tianming is a bright and cheerful boy, at the age of 12 or 13. He is playful and mischievous though protective of his friends. He has a crush on Gao Yue ,a girl under the care of Mohists, though he thinks that her big sister, Duanmu Rong, is a cold person who's face is 'stiff as a board'. He treats Ge Nie as his father, and aspires to become a swordsman just like him. He also has a continuous rivalry with Xiang Shaoyu, and a playful relationship with Master Ban. He has a 'passionate' love for food and immediately goes berserk if someone eats his food or destroys it. Although quite shallow in certain aspects, his loyalty, braveness and innocence stand out as some of his more positive traits. Perhaps the most driving aspect of his character, is his belief that his father will return to him one day, thus motivating him to become one of the most famous swordsmen in the world.