Title: I'm the Soldier's Ex-Girlfriend
Maise Hazelnut is supposed to be the saintly female protagonist of the harem romance novel The Soldier's Girlfriend. But, unfortunately, the current Maise is not that saintess character. Instead, she is a girl from the 21st century who has reincarnated into the world of her favorite novel! But she's not just any character – she is the saintess! She initially enjoys the adventure and her cute, soon-to-be-soldier male protagonist boyfriend, Sucre. However, it doesn't take long before all of it gets old, especially when Maise is often getting kidnapped so Sucre's enemies can threaten him. While he is off gallivanting on various male protagonist adventures, he is also flirting with all the beautiful women of the novel.
Fed up with the plot, Maise decides to live her life her way. The first step to do that is breaking up with Sucre, and while he doesn't take it well, Maise holds firm. So, newly single and living her best, peaceful life, Maise goes out to look for her true love. In her pursuit, she is set up with the mysterious Eith Lancell. He's handsome, considerate, and everything that Sucre wasn't, which is just what our independent female protagonist is looking for. Eith seems just a bit too perfect, and it isn't long before Maise suspects there is more than what meets the eye with her devilishly handsome new beau.