Bad first life, reincarnated modern day - early death and back to first life as a teenager - avoid bad end by becoming a doctor
To prevent the bad end she will marry the big boss
read novel up to chapter 130 (https://www.novelupdates.com/series/to-be-a-power-in-the-shadows/) - simply amazing!
Villainess decides to hide magic and enroll in different school in order to avoid bad end and become an adventurer - memories of 30 year old office worker
two characters with past memories - main lead and villainess, rest of characters all yandere; having two characters with memories makes it interesting, but will lead to misunderstandings.
Not quite sure where they are going with this - memories don't come until a 20 year non-aging coma after the initial game story line. She has overwhelming power and can rush an apple with her fist.
Isekai of modern person to fantasy world. Given an overwhelming power but not a hero. He is aiming for the simple life and only has one wife.
Doctor Elise