I woke up in a strange place, with only a phone to guide me. To recover my memories and return home, I had to raise my targets’ affection levels and unlock a special ending. But once a target has over five hearts, it triggers overheat—and a dangerous, unhinged ending awaits. It's a delicate balance! (Source: Manta)

After a prophetic dream foretells her sister’s death in a political marriage, Arasilla Hugo takes matters into her own hands and marries in her place. Her groom? Demian Vandermeer, the knights’ captain and the brother of her sister’s former betrothed. The only problem is that mages and knights are sworn enemies, and their sharp tongues and stubborn hearts turn every situation into a competition. Arasilla races to save her sister from a tragic fate, while Demian fights for the dukedom. Will their rivalry stay just that? Or will their contractual marriage burn into something more? (Source: WEBTOON)

Reincarnated as the heroine of a dark fantasy novel who meets a tragic end, Ibelin is determined to avoid her fate. After being forced into a marriage with the cold and indifferent Dyffrin, she resolves that, no matter what, she would divorce him in two years, taking a hefty alimony with her in the process. However, as she begins to put her plans to take control of her destiny into action, controlling one’s feelings proves harder than expected for both Ibelin and Dyffrin as their relationship takes an unexpected turn. (Source: WEBTOONS)

https://mechacomic.jp/books/265800