After Being Forced to Break Up

The boyfriend was forced by a foreigner to break up with the heroine using magic. The heroine, who was kept in the dark, lived a life of depression and decline. After discovering the abnormalities of the people around her, the heroine gradually cheered up and started fighting against the foreigner. The scary thing is that in the process, she actually fell in love with the foreigner who was the culprit. In the end, there is a huge secret waiting for them as the two parties fight. Their struggle is the result of another conspiracy...