Look what you've done

Hwang Hyunjin is the perfect student, he has good grades, he's the captain of the soccer team, he's popular and hot... Unfortunately, that doesn't stop him from being mean and rude to everyone (especially to Felix). Oh and he's...straight. Or that's what he thinks until he meets bad boy Felix, who will surprise him in more than one way.

But he's straight, and he would never, ever, lay with a man. Much less with one he deeply hates.

Or; Hyunjin is straight and would never lay with a man and Felix a bratty confident gay that makes Hyunjin want to rip his hair out.

Or; Their sexuality makes them enemies until Hyunjin meets his own self thanks to Felix, even though it takes a huge effort.