On the national swim team, Jae-won and Do-hyun are known for one thing: rivalry. Every race is a war. Every glance is a challenge. Every win comes with a question—was it real? But after one mistake in an empty locker room, their hatred turns into something dangerous. Something addictive. They tell themselves it means nothing. They swear it’s the last time. They never stop. Because the line between love and hate? They crossed it a long time ago. inspired by “enemies with benefits” by monsta x.