Head Over Heels 

Woo-Hyun is rich, good-looking and popular… but he also happens to be a total bully. His punching bag is Ha-Yan, a stuttering and amenable girl in his class. Woo-Hyun likes nothing more than harassing her… The weird thing is, Ha-Yan actually seems to crave his attention, feeding off it. As they each spin a web of deceit to ensnare the other, who will end up getting caught? And could romance bloom from this tangled, thorny mass of obsession? (Source: Lezhin US)