somnia's Manga

This is something you want to start reading when you just want to have fun. The story is consistent, the characters are mostly consistent, add in your classic isekai shoujo setting, and you'll be fine.
But honestly, after MC marries it's like why are we still here? The longer this goes on, the more you think about it. And in turn the jokes become stale.

This is the SSS-class of shoujo reincarnation manhwa if you ask me.
A young female college student finds herself in the body of Realiana, a minor character destined to be murdered. She's the starting point of a criminal romance drama starring Realiana's friend and the ML duke daddy of your semi-masochistic dreams.
Anyway, our FL does not want to die again, so she starts taking measures as well as taking down red flags.
I don't want to spoil too much, she basically ends up chilling with the ML in a contract relationship kind of deal, and together they start encountering more and more crimes, which eventually leads them deeper and deeper into serious plot, all the while their relationship develops nicely. I love their dynamic sm.

Anyway, the humor and characters have a good umph to them, despite the more serious murder mystery vibes we get going on. The author certainly knows what they were doing, everything from the comedic timing to the final plot points is planned well. Even FL's reincarnation has solid ground and reason.
I will certainly read this again.