Yuusha-sama Ni Ikinari Kyuukonsareta No Desu Ga
As I have described in my comment on this, it is literally a genderbent fantasy au of Yandere Simulator, if Senpai was a bit more self-aware (not THAT much more though). Take from that info what you will.
Otome Game no Hametsu Flag shika nai Akuyaku Reijou ni Tensei shite shimatta...
In which a girl is reincarnated as the main villain of an otome game (with no redemption route) and is so focused on not getting a Bad End that she doesn't even notice when she accidentally seduces literally everyone around her.
Isekai Yururi Kikou: Kosodateshinagara Boukensha Shimasu
Isekai Yakkyoku
In which a well meaning pharmacist (who is also one of the top researchers in the medical world) literally dies from stress (the fool) and is reborn as a TEN YEAR OLD in the MIDDLE AGES and STILL GETS HIS JOB BACK IN LIKE. A MONTH. MAX.
From Maid to Mother