Synopsis: I'm the Soldier's Ex-Girlfriend (Pre-serialization)

This manhwa is a promotional adaptation of the novel where the protagonist finds herself reincarnated as the predictable third-rate harem novel's heroine. She chooses to live the comfortable life with her hero boyfriend but realizes it's not as romantic when surrounded by other women vying for his attention. After breaking up with the soldier, she marries someone else she met on a blind date, only to find out that her new husband is the demon king. Despite her discomfort, the demon king wants her to be his, but she's not interested. No matter how she tries, everything seems to go wrong.