straight romance with likable leads

Female lead wakes up in the body of a side character and must make the ML fall in love with her so that he doesn’t father that world’s villain.

World’s most powerful mage reincarnates into the body of the prophesied third child of the empire and wins the hearts of her cold father and brothers. I love stories where they dote on the protagonist lmao

Author is forcibly kidnapped and taken into her own novel’s world. She falls in love with the villain she wrote.

Forgotten princess can foresee the future and tries to change her terrible fate by marrying a powerful duke.

Her father’s an inventor who leaves an android to keep her company because he never did.

FL has the power to see when people have ill intentions. She distrusts everyone because she’s afraid they’ll turn on her. Then she meets a heavily scarred man who makes her dark world a little bit brighter.

Ngl this was drawn out and sometimes the characters were indecisive or made frustrating decisions, BUT I loved the ending and the character development. The story is about a proud, bitter old couple who fight day and night until they fall into a well and turn back into their 17-year-old selves.

Isekai
Girl feels pity for the second male interest who lived a pitiful life from birth to death. She wakes up as his maid and promises to take care of him as a sweet side character until he eventually falls for the female lead. The plan goes well, except he falls for her instead.

Cunning villainess turns back time to expose her "saintly" step-sister for her misdeeds and to ruin her family's reputation.

Scientist/Inventor creates a historical fictional world centered around her male protagonist and enters it via virtual reality. However, she becomes trapped in this world and has to survive as a female slave armed with only her wits. She worms her way into her protagonist's castle as their trusty innovator.