My Brother Is a Bad Student

In front of his parents, he is an out-and-out bastard son. In the eyes of his teachers, he is a bad boy who is ignorant and ignorant. In front of his classmates, he is a bad classmate who eats, drinks, has fun, likes to fight, and does nothing. Little did they know that he not only had a super high IQ, he was not only a coach at a Taekwondo gym, but also a super member of a boxing club. He was also a hacker and a basketball master. He used his IQ to open a self-operated store filled with masters from all walks of life! This student who looks like nothing on the outside has many well-known secrets behind him!