Shitsuren Kinki

Eri Moriyama, who dreamed of a glamorous life in the workplace and new encounters, spent her days dissatisfied at a small office in the countryside. She just couldn't accept that her much older, bossy senior had a super handsome boyfriend. "That's not fair," she thought, "I'm better," and her selfish unrequited love drove Eri out of control. Is this love, hatred, or a curse?

(Source: Hakusensha, translated)