Any genre/theme is fine no matter if it's regression, reincarnation, or anything as long as it's according to the topic. Anyways thank you in advance!
Looking for one where MC hides their identity/pretends to be another person.
Wanting RecommendationsThe following involve MC becoming (whether through regression, reincarnation, disguise, or just plain "hiding their true skills") someone else from their true form:
[Exclusive Maid of the Evil Empress]
[Lies Become You]
[Ebony/Lady Evony]
[One Pair Lady]
[The Noble Pirate]
[Why Would a Villainess have Virtues?]
[The Readymade Queen]
[I will Become Master of a Stolen Family]
[Your Throne/I Want to Be You, Just for a Day]
[Dimensional Mercenary]
[Cheating Men Must Die]
[Unholy Blood] - FMC has to hide her "true" nature from those around her
[Return of the Bloodthirsty Police]
These next are a bit different, where MC "isekai's" into an ongoing story in the body of a named/established character, and must keep secret the fact that they are *not* the OG character..
[Rebirth of a Tyrant Empress]
[I Tamed a Tyrant and Ran Away]
[Shadow Garden]
[Release that Witch] (I prefer the web novel over the manga version)
[Crimson Karma]
[How to Clear a Dating Sim as a Side Character]
[I am a Martial Art Villainess, but I'm the Strongest]
[Duchess's 50 Tea Recipes]
[Kill the Villainess]
[Villains are Destined to Die]
[I Thought it was a Common Isekai Story]
The reason the twin lady cross dresses
It's not an isekai, but you might like Obsidian Bride. The FL has to join a reality TV dating show while pretending to be someone else. It still has a medieval European setting.
• Secret Lady
• The Heiress's Double Life
• Caught By the Villain