She's Hopeless(2020)

Nodab Sonyeo

Though she comes from a rich family, Ga-Bin is a bullied loner at school. That doesn't mean she puts up with bullying from other students, though -- Ga-Bin is infamous for her fierce personality. Worried about Ga-Bin's well-being, her family secretly offers Tae-Ung $500,000 to transfer schools and act as her bodyguard. Will Tae-Ung be able to protect her from the school bullies, all while keeping his identity hidden from Ga-Bin and the other students?

(Source: WEBTOON)