Getting dumped is harder than it looks!

I-Na has the world's grumpiest neighbor, Geon-Ho. The love letter meant for his brother Ju-Hyeong somehow finds its way to Geon-Ho instead! Before she can fix her mistake, he accepts her confession! I-Na tries everything possible to get dumped by Geon-Ho, but it seems he has a different game plan altogether!

(Source: Manta, edited)