Jungkook is an extremely evil, mischievous and rude boy in the class who is extremely weak in math... But he is very handsome and attractive and everyone is crushing on Jungkook... Taehyung is a beautiful, calm and clean boy who is forced by the manager to teach math to Jungkook because Taehyung is very good at math. But Jungkook insists and doesn't want..