Straight or [Yuri /Yaoi]???
Make your choice.
any works
would prefer a femqle mc though
In straight, you can find lots of them in Shoujo section
In Yaoi, we have Gloomy Delusion (Modern), dreadful night (Horror game), The Time a Gangster was Reincarnated as Ranmaru Mori (Japanese historical), Possessed by a Cotton Ball (Historical), Stuck in My Sister's Dating Sim (game historical), 0 and 1 (Historical)
Not sure on Yuri, I asked just in case and someone mught answer to your needs
got any isekais that have a cool, not overly kind and smart MC? No cold/silent or cunning/foxy MLs pls, i hate them. preferably one where MC is actually smart and not just overpowered from the start