Monomania

Ji-U is popular for her lovely appearance and bright personality. She get confessions often, but when she start dating the person, the relationship ends quickly because of her obsessive habit. No one understood Ji-U, but then I-Jae, a transfer student, appears one day and listens to her story. Ji-U gradually falls for I-Jae and even feels a strange possessive desire... (Source: Naver, translated)