WHY ME?: Ouji ga Watashi wo Suki na Wake

Segawa-san has started working as a temporary worker for three months. She is aware that her looks and earnest personality mean she is not the type to appeal to men. However, soon after joining the company, she seems to have been taken by a handsome, prince-like employee, Yoshinaga! He is always kind to her, but the more she gets to know him, the more she cannot find a reason why he likes her! Why me?! A mismatched, unpredictable love story begins!

(Source: Hakusensha, translated)