Please input any novels or manga (anything really) that involves a modern female transmigrating into a historical background, and it does not matter whether there is or isn't magical elements in it. A classic example would be modern average woman reincarnating into a manga she read, becoming [insert character] in the story, relying on her knowledge of the novel to survive. Of course that was only an example and MC's without knowledge of their new world is fine too. I have seen a few manga of this type devoid of romance, so I would also prefer that there be at least 1 romantic interest in the thing (doesn't matter if harem or no harem). thanks.
I'm surprised you've seen a lot of non-romance ones. This has really been trending for a while for romance webtoons. Here's a few comics. (Mostly novel adaptations, but I don't think the novels have active translations) I'd have more but I have to really think to remember if they transmigrated or turned back time. Survive as the Hero's Wife I'll Just Live on as a Villainess The Way to Protect the Female Lead's Older Brother Sincerely: I Became a Duke's Maid Seduce the Villain's Father Is It Fortune or Is It Woe? I Stole the Male Lead's First Night Beast With Flowers
Outaishihi ni Nante Naritakunai!! (smut) I’m Ready for Divorce! (romance) Common Sense of a Duke’s Daughter (politics)
Golden Age Legitimate Fei Our Binding Love: My Gentle Tyrant Rebirth of the Tyrant’s Pet: Regent Prince is too Fierce
The Villainess is a Marionette Who Made Me a Princess The Twin Siblings’ New Life I've Become the Villanous Emperor of a Novel